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Finding the Fourth Proportional to 240,843.17, 361,283.90 and 80,919.71

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Solution

The fourth proportional to 240,843.17, 361,283.90 and 80,919.71 is: 121,385.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,843.17 : 361,283.90 = 80,919.71 : x
  2. Step 2: Convert to fraction form
    240,843.17/361,283.90 = 80,919.71/x
  3. Step 3: Cross multiply
    240,843.17x = 361,283.90 × 80,919.71
  4. Step 4: Simplify right side
    240,843.17x = 29,234,987,559.47
  5. Step 5: Solve for x
    x = 29,234,987,559.47/240,843.17
  6. Step 6: Final answer
    x = 121,385.99

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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.