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Finding the Third Proportional to 251,687.25 and 392,839.88

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Solution

The third proportional to 251,687.25 and 392,839.88 is: 613,154.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,687.25 : 392,839.88 = 392,839.88 : x
  2. Step 2: Convert to fraction form
    251,687.25/392,839.88 = 392,839.88/x
  3. Step 3: Cross multiply
    251,687.25x = 392,839.88 × 392,839.88
  4. Step 4: Simplify right side
    251,687.25x = 154,323,167,390.02
  5. Step 5: Solve for x
    x = 154,323,167,390.02/251,687.25
  6. Step 6: Final answer
    x = 613,154.49

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.