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Finding the Fourth Proportional to 392,310.60, 541,249.41 and 256,423.02

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Solution

The fourth proportional to 392,310.60, 541,249.41 and 256,423.02 is: 353,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,310.60 : 541,249.41 = 256,423.02 : x
  2. Step 2: Convert to fraction form
    392,310.60/541,249.41 = 256,423.02/x
  3. Step 3: Cross multiply
    392,310.60x = 541,249.41 × 256,423.02
  4. Step 4: Simplify right side
    392,310.60x = 138,788,808,285.42
  5. Step 5: Solve for x
    x = 138,788,808,285.42/392,310.60
  6. Step 6: Final answer
    x = 353,772.77

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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.