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Finding the Third Proportional to 135,712 and 289,458

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Solution

The third proportional to 135,712 and 289,458 is: 617,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,712 : 289,458 = 289,458 : x
  2. Step 2: Convert to fraction form
    135,712/289,458 = 289,458/x
  3. Step 3: Cross multiply
    135,712x = 289,458 × 289,458
  4. Step 4: Simplify right side
    135,712x = 83,785,933,764
  5. Step 5: Solve for x
    x = 83,785,933,764/135,712
  6. Step 6: Final answer
    x = 617,380.44

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.