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Finding the Fourth Proportional to 275,678.40, 413,575.20 and 88,708.80

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Solution

The fourth proportional to 275,678.40, 413,575.20 and 88,708.80 is: 133,081.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,678.40 : 413,575.20 = 88,708.80 : x
  2. Step 2: Convert to fraction form
    275,678.40/413,575.20 = 88,708.80/x
  3. Step 3: Cross multiply
    275,678.40x = 413,575.20 × 88,708.80
  4. Step 4: Simplify right side
    275,678.40x = 36,687,759,701.76
  5. Step 5: Solve for x
    x = 36,687,759,701.76/275,678.40
  6. Step 6: Final answer
    x = 133,081.73

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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.