The Collaborative International Dictionary of English v.0.48:
Proportionateness \Pro*por"tion*ate*ness\, n. The quality or state of being proportionate. --Sir M. Hale. [1913 Webster]WordNet (r) 3.0 (2006):
proportionateness n 1: the relation of corresponding in degree or size or amount [syn: commensurateness, correspondence, proportionateness]