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Finding the Fourth Proportional to 393,163.38, 542,562.62 and 223,397.52

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Solution

The fourth proportional to 393,163.38, 542,562.62 and 223,397.52 is: 308,286.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,163.38 : 542,562.62 = 223,397.52 : x
  2. Step 2: Convert to fraction form
    393,163.38/542,562.62 = 223,397.52/x
  3. Step 3: Cross multiply
    393,163.38x = 542,562.62 × 223,397.52
  4. Step 4: Simplify right side
    393,163.38x = 121,207,143,752.70
  5. Step 5: Solve for x
    x = 121,207,143,752.70/393,163.38
  6. Step 6: Final answer
    x = 308,286.96

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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.