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Finding the Fourth Proportional to 363,561.78, 545,277 and 126,972.12

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Solution

The fourth proportional to 363,561.78, 545,277 and 126,972.12 is: 190,435.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,561.78 : 545,277 = 126,972.12 : x
  2. Step 2: Convert to fraction form
    363,561.78/545,277 = 126,972.12/x
  3. Step 3: Cross multiply
    363,561.78x = 545,277 × 126,972.12
  4. Step 4: Simplify right side
    363,561.78x = 69,234,976,677.24
  5. Step 5: Solve for x
    x = 69,234,976,677.24/363,561.78
  6. Step 6: Final answer
    x = 190,435.25

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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.