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Finding the Fourth Proportional to 478,517.52, 660,348.88 and 274,600.52

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Solution

The fourth proportional to 478,517.52, 660,348.88 and 274,600.52 is: 378,945.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,517.52 : 660,348.88 = 274,600.52 : x
  2. Step 2: Convert to fraction form
    478,517.52/660,348.88 = 274,600.52/x
  3. Step 3: Cross multiply
    478,517.52x = 660,348.88 × 274,600.52
  4. Step 4: Simplify right side
    478,517.52x = 181,332,145,829.42
  5. Step 5: Solve for x
    x = 181,332,145,829.42/478,517.52
  6. Step 6: Final answer
    x = 378,945.68

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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.