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Finding the Fourth Proportional to 363,561, 545,344.20 and 126,903.90

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Solution

The fourth proportional to 363,561, 545,344.20 and 126,903.90 is: 190,356.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,561 : 545,344.20 = 126,903.90 : x
  2. Step 2: Convert to fraction form
    363,561/545,344.20 = 126,903.90/x
  3. Step 3: Cross multiply
    363,561x = 545,344.20 × 126,903.90
  4. Step 4: Simplify right side
    363,561x = 69,206,305,822.38
  5. Step 5: Solve for x
    x = 69,206,305,822.38/363,561
  6. Step 6: Final answer
    x = 190,356.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.