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Finding the Fourth Proportional to 283,080.31, 424,643.52 and 80,691.90

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Solution

The fourth proportional to 283,080.31, 424,643.52 and 80,691.90 is: 121,044.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,080.31 : 424,643.52 = 80,691.90 : x
  2. Step 2: Convert to fraction form
    283,080.31/424,643.52 = 80,691.90/x
  3. Step 3: Cross multiply
    283,080.31x = 424,643.52 × 80,691.90
  4. Step 4: Simplify right side
    283,080.31x = 34,265,292,451.49
  5. Step 5: Solve for x
    x = 34,265,292,451.49/283,080.31
  6. Step 6: Final answer
    x = 121,044.42

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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.