proportionateness

/prəˈpɔrʃənətnəs/
noun
  1. The quality of being balanced or appropriate in size, amount, or degree relative to something else.
    • The proportionateness of the punishment to the crime was questioned by the judge.
    • She admired the proportionateness of the building's design, where every element seemed perfectly scaled.
    • In a healthy diet, proportionateness between different food groups is important.