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Finding the Fourth Proportional to 415,154.92, 572,920.14 and 245,404.84

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Solution

The fourth proportional to 415,154.92, 572,920.14 and 245,404.84 is: 338,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,154.92 : 572,920.14 = 245,404.84 : x
  2. Step 2: Convert to fraction form
    415,154.92/572,920.14 = 245,404.84/x
  3. Step 3: Cross multiply
    415,154.92x = 572,920.14 × 245,404.84
  4. Step 4: Simplify right side
    415,154.92x = 140,597,375,289.48
  5. Step 5: Solve for x
    x = 140,597,375,289.48/415,154.92
  6. Step 6: Final answer
    x = 338,662.43

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1.5x scale

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.