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Finding the Fourth Proportional to 415,545.39, 623,279.21 and 178,843.95

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Solution

The fourth proportional to 415,545.39, 623,279.21 and 178,843.95 is: 268,249.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,545.39 : 623,279.21 = 178,843.95 : x
  2. Step 2: Convert to fraction form
    415,545.39/623,279.21 = 178,843.95/x
  3. Step 3: Cross multiply
    415,545.39x = 623,279.21 × 178,843.95
  4. Step 4: Simplify right side
    415,545.39x = 111,469,714,975.06
  5. Step 5: Solve for x
    x = 111,469,714,975.06/415,545.39
  6. Step 6: Final answer
    x = 268,249.19

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1.5x scale

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.