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Finding the Fourth Proportional to 398,754.38, 598,380.56 and 265,727.97

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Solution

The fourth proportional to 398,754.38, 598,380.56 and 265,727.97 is: 398,757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,754.38 : 598,380.56 = 265,727.97 : x
  2. Step 2: Convert to fraction form
    398,754.38/598,380.56 = 265,727.97/x
  3. Step 3: Cross multiply
    398,754.38x = 598,380.56 × 265,727.97
  4. Step 4: Simplify right side
    398,754.38x = 159,006,450,167.62
  5. Step 5: Solve for x
    x = 159,006,450,167.62/398,754.38
  6. Step 6: Final answer
    x = 398,757.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.