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Finding the Fourth Proportional to 275,487.40, 413,288.70 and 88,517.80

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Solution

The fourth proportional to 275,487.40, 413,288.70 and 88,517.80 is: 132,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,487.40 : 413,288.70 = 88,517.80 : x
  2. Step 2: Convert to fraction form
    275,487.40/413,288.70 = 88,517.80/x
  3. Step 3: Cross multiply
    275,487.40x = 413,288.70 × 88,517.80
  4. Step 4: Simplify right side
    275,487.40x = 36,583,406,488.86
  5. Step 5: Solve for x
    x = 36,583,406,488.86/275,487.40
  6. Step 6: Final answer
    x = 132,795.21

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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.