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Finding the Third Proportional to 123,399 and 267,939

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Solution

The third proportional to 123,399 and 267,939 is: 581,781.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,399 : 267,939 = 267,939 : x
  2. Step 2: Convert to fraction form
    123,399/267,939 = 267,939/x
  3. Step 3: Cross multiply
    123,399x = 267,939 × 267,939
  4. Step 4: Simplify right side
    123,399x = 71,791,307,721
  5. Step 5: Solve for x
    x = 71,791,307,721/123,399
  6. Step 6: Final answer
    x = 581,781.92

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.