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Finding the Third Proportional to 135,929 and 319,812

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Solution

The third proportional to 135,929 and 319,812 is: 752,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,929 : 319,812 = 319,812 : x
  2. Step 2: Convert to fraction form
    135,929/319,812 = 319,812/x
  3. Step 3: Cross multiply
    135,929x = 319,812 × 319,812
  4. Step 4: Simplify right side
    135,929x = 102,279,715,344
  5. Step 5: Solve for x
    x = 102,279,715,344/135,929
  6. Step 6: Final answer
    x = 752,449.55

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.