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Finding the Fourth Proportional to 267,031.20, 400,495.80 and 80,042.70

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Solution

The fourth proportional to 267,031.20, 400,495.80 and 80,042.70 is: 120,048.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,031.20 : 400,495.80 = 80,042.70 : x
  2. Step 2: Convert to fraction form
    267,031.20/400,495.80 = 80,042.70/x
  3. Step 3: Cross multiply
    267,031.20x = 400,495.80 × 80,042.70
  4. Step 4: Simplify right side
    267,031.20x = 32,056,765,170.66
  5. Step 5: Solve for x
    x = 32,056,765,170.66/267,031.20
  6. Step 6: Final answer
    x = 120,048.76

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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.