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Finding the Fourth Proportional to 392,592.48, 541,790.94 and 220,540.80

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Solution

The fourth proportional to 392,592.48, 541,790.94 and 220,540.80 is: 304,353.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,592.48 : 541,790.94 = 220,540.80 : x
  2. Step 2: Convert to fraction form
    392,592.48/541,790.94 = 220,540.80/x
  3. Step 3: Cross multiply
    392,592.48x = 541,790.94 × 220,540.80
  4. Step 4: Simplify right side
    392,592.48x = 119,487,007,340.35
  5. Step 5: Solve for x
    x = 119,487,007,340.35/392,592.48
  6. Step 6: Final answer
    x = 304,353.79

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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.