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Finding the Fourth Proportional to 416,811.20, 625,216.80 and 136,260.80

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Solution

The fourth proportional to 416,811.20, 625,216.80 and 136,260.80 is: 204,391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,811.20 : 625,216.80 = 136,260.80 : x
  2. Step 2: Convert to fraction form
    416,811.20/625,216.80 = 136,260.80/x
  3. Step 3: Cross multiply
    416,811.20x = 625,216.80 × 136,260.80
  4. Step 4: Simplify right side
    416,811.20x = 85,192,541,341.44
  5. Step 5: Solve for x
    x = 85,192,541,341.44/416,811.20
  6. Step 6: Final answer
    x = 204,391.20

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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.