harmonious vs proportionate

harmonious and proportionate both are adjectives.

Word	Noun	Adjective	Verb	Adverb
harmonious	No	Yes	No	No
proportionate	No	Yes	No	No

As adjectives, harmonious and proportionate are synonyms defined as:

harmonious and proportionate: exhibiting equivalence or correspondence among constituents of an entity or between different entities

Other synonyms of harmonious include symmetrical.

harmonious (adjective)	proportionate (adjective)
musically pleasing	being in due proportion
exhibiting equivalence or correspondence among constituents of an entity or between different entities	exhibiting equivalence or correspondence among constituents of an entity or between different entities
existing together in harmony	agreeing in amount, magnitude, or degree
suitable and fitting