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Finding the Fourth Proportional to 392,310.10, 541,248.72 and 256,422.52

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Solution

The fourth proportional to 392,310.10, 541,248.72 and 256,422.52 is: 353,772.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,310.10 : 541,248.72 = 256,422.52 : x
  2. Step 2: Convert to fraction form
    392,310.10/541,248.72 = 256,422.52/x
  3. Step 3: Cross multiply
    392,310.10x = 541,248.72 × 256,422.52
  4. Step 4: Simplify right side
    392,310.10x = 138,788,360,729.17
  5. Step 5: Solve for x
    x = 138,788,360,729.17/392,310.10
  6. Step 6: Final answer
    x = 353,772.08

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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.