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Finding the Fourth Proportional to 239,500.80, 359,251.20 and 81,676.80

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Solution

The fourth proportional to 239,500.80, 359,251.20 and 81,676.80 is: 122,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,500.80 : 359,251.20 = 81,676.80 : x
  2. Step 2: Convert to fraction form
    239,500.80/359,251.20 = 81,676.80/x
  3. Step 3: Cross multiply
    239,500.80x = 359,251.20 × 81,676.80
  4. Step 4: Simplify right side
    239,500.80x = 29,342,488,412.16
  5. Step 5: Solve for x
    x = 29,342,488,412.16/239,500.80
  6. Step 6: Final answer
    x = 122,515.20

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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.