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Finding the Fourth Proportional to 437,879.20, 656,818.80 and 251,255.20

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Solution

The fourth proportional to 437,879.20, 656,818.80 and 251,255.20 is: 376,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,879.20 : 656,818.80 = 251,255.20 : x
  2. Step 2: Convert to fraction form
    437,879.20/656,818.80 = 251,255.20/x
  3. Step 3: Cross multiply
    437,879.20x = 656,818.80 × 251,255.20
  4. Step 4: Simplify right side
    437,879.20x = 165,029,138,957.76
  5. Step 5: Solve for x
    x = 165,029,138,957.76/437,879.20
  6. Step 6: Final answer
    x = 376,882.80

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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.