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Finding the Fourth Proportional to 275,712.60, 413,640.90 and 88,728.60

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Solution

The fourth proportional to 275,712.60, 413,640.90 and 88,728.60 is: 133,116.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,712.60 : 413,640.90 = 88,728.60 : x
  2. Step 2: Convert to fraction form
    275,712.60/413,640.90 = 88,728.60/x
  3. Step 3: Cross multiply
    275,712.60x = 413,640.90 × 88,728.60
  4. Step 4: Simplify right side
    275,712.60x = 36,701,777,959.74
  5. Step 5: Solve for x
    x = 36,701,777,959.74/275,712.60
  6. Step 6: Final answer
    x = 133,116.07

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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.