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Finding the Third Proportional to 157,531 and 239,209

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Solution

The third proportional to 157,531 and 239,209 is: 363,236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,531 : 239,209 = 239,209 : x
  2. Step 2: Convert to fraction form
    157,531/239,209 = 239,209/x
  3. Step 3: Cross multiply
    157,531x = 239,209 × 239,209
  4. Step 4: Simplify right side
    157,531x = 57,220,945,681
  5. Step 5: Solve for x
    x = 57,220,945,681/157,531
  6. Step 6: Final answer
    x = 363,236.10

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.