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Finding the Fourth Proportional to 521,791.20, 782,103.60 and 222,220.80

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Solution

The fourth proportional to 521,791.20, 782,103.60 and 222,220.80 is: 333,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,791.20 : 782,103.60 = 222,220.80 : x
  2. Step 2: Convert to fraction form
    521,791.20/782,103.60 = 222,220.80/x
  3. Step 3: Cross multiply
    521,791.20x = 782,103.60 × 222,220.80
  4. Step 4: Simplify right side
    521,791.20x = 173,799,687,674.88
  5. Step 5: Solve for x
    x = 173,799,687,674.88/521,791.20
  6. Step 6: Final answer
    x = 333,082.83

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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.