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Finding the Fourth Proportional to 422,871.97, 583,589.90 and 231,885.36

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Solution

The fourth proportional to 422,871.97, 583,589.90 and 231,885.36 is: 320,016.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,871.97 : 583,589.90 = 231,885.36 : x
  2. Step 2: Convert to fraction form
    422,871.97/583,589.90 = 231,885.36/x
  3. Step 3: Cross multiply
    422,871.97x = 583,589.90 × 231,885.36
  4. Step 4: Simplify right side
    422,871.97x = 135,325,954,053.86
  5. Step 5: Solve for x
    x = 135,325,954,053.86/422,871.97
  6. Step 6: Final answer
    x = 320,016.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.