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Finding the Fourth Proportional to 422,327.28, 632,609.52 and 253,311.60

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Solution

The fourth proportional to 422,327.28, 632,609.52 and 253,311.60 is: 379,438.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,327.28 : 632,609.52 = 253,311.60 : x
  2. Step 2: Convert to fraction form
    422,327.28/632,609.52 = 253,311.60/x
  3. Step 3: Cross multiply
    422,327.28x = 632,609.52 × 253,311.60
  4. Step 4: Simplify right side
    422,327.28x = 160,247,329,686.43
  5. Step 5: Solve for x
    x = 160,247,329,686.43/422,327.28
  6. Step 6: Final answer
    x = 379,438.74

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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.