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Finding the Fourth Proportional to 275,639.80, 413,574.90 and 88,708.60

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Solution

The fourth proportional to 275,639.80, 413,574.90 and 88,708.60 is: 133,099.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,639.80 : 413,574.90 = 88,708.60 : x
  2. Step 2: Convert to fraction form
    275,639.80/413,574.90 = 88,708.60/x
  3. Step 3: Cross multiply
    275,639.80x = 413,574.90 × 88,708.60
  4. Step 4: Simplify right side
    275,639.80x = 36,687,650,374.14
  5. Step 5: Solve for x
    x = 36,687,650,374.14/275,639.80
  6. Step 6: Final answer
    x = 133,099.97

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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.