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Finding the Fourth Proportional to 392,665.11, 541,863.51 and 239,958.90

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Solution

The fourth proportional to 392,665.11, 541,863.51 and 239,958.90 is: 331,134.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,665.11 : 541,863.51 = 239,958.90 : x
  2. Step 2: Convert to fraction form
    392,665.11/541,863.51 = 239,958.90/x
  3. Step 3: Cross multiply
    392,665.11x = 541,863.51 × 239,958.90
  4. Step 4: Simplify right side
    392,665.11x = 130,024,970,609.95
  5. Step 5: Solve for x
    x = 130,024,970,609.95/392,665.11
  6. Step 6: Final answer
    x = 331,134.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.