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Finding the Fourth Proportional to 391,566.60, 587,349.90 and 267,150.60

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Solution

The fourth proportional to 391,566.60, 587,349.90 and 267,150.60 is: 400,725.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,566.60 : 587,349.90 = 267,150.60 : x
  2. Step 2: Convert to fraction form
    391,566.60/587,349.90 = 267,150.60/x
  3. Step 3: Cross multiply
    391,566.60x = 587,349.90 × 267,150.60
  4. Step 4: Simplify right side
    391,566.60x = 156,910,878,194.94
  5. Step 5: Solve for x
    x = 156,910,878,194.94/391,566.60
  6. Step 6: Final answer
    x = 400,725.90

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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.