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Finding the Fourth Proportional to 392,744.12, 541,953.59 and 220,648.59

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Solution

The fourth proportional to 392,744.12, 541,953.59 and 220,648.59 is: 304,476.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,744.12 : 541,953.59 = 220,648.59 : x
  2. Step 2: Convert to fraction form
    392,744.12/541,953.59 = 220,648.59/x
  3. Step 3: Cross multiply
    392,744.12x = 541,953.59 × 220,648.59
  4. Step 4: Simplify right side
    392,744.12x = 119,581,294,375.70
  5. Step 5: Solve for x
    x = 119,581,294,375.70/392,744.12
  6. Step 6: Final answer
    x = 304,476.35

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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.