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Finding the Fourth Proportional to 391,535.10, 587,302.65 and 267,119.10

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Solution

The fourth proportional to 391,535.10, 587,302.65 and 267,119.10 is: 400,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,535.10 : 587,302.65 = 267,119.10 : x
  2. Step 2: Convert to fraction form
    391,535.10/587,302.65 = 267,119.10/x
  3. Step 3: Cross multiply
    391,535.10x = 587,302.65 × 267,119.10
  4. Step 4: Simplify right side
    391,535.10x = 156,879,755,295.62
  5. Step 5: Solve for x
    x = 156,879,755,295.62/391,535.10
  6. Step 6: Final answer
    x = 400,678.65

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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.