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Finding the Fourth Proportional to 392,672.90, 541,874.18 and 239,966.64

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Solution

The fourth proportional to 392,672.90, 541,874.18 and 239,966.64 is: 331,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,672.90 : 541,874.18 = 239,966.64 : x
  2. Step 2: Convert to fraction form
    392,672.90/541,874.18 = 239,966.64/x
  3. Step 3: Cross multiply
    392,672.90x = 541,874.18 × 239,966.64
  4. Step 4: Simplify right side
    392,672.90x = 130,031,725,077.52
  5. Step 5: Solve for x
    x = 130,031,725,077.52/392,672.90
  6. Step 6: Final answer
    x = 331,145.15

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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.