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Finding the Third Proportional to 206,662 and 319,372

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Solution

The third proportional to 206,662 and 319,372 is: 493,552.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,662 : 319,372 = 319,372 : x
  2. Step 2: Convert to fraction form
    206,662/319,372 = 319,372/x
  3. Step 3: Cross multiply
    206,662x = 319,372 × 319,372
  4. Step 4: Simplify right side
    206,662x = 101,998,474,384
  5. Step 5: Solve for x
    x = 101,998,474,384/206,662
  6. Step 6: Final answer
    x = 493,552.15

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.