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Finding the Fourth Proportional to 221,451.90, 332,080.65 and 88,287.90

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Solution

The fourth proportional to 221,451.90, 332,080.65 and 88,287.90 is: 132,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,451.90 : 332,080.65 = 88,287.90 : x
  2. Step 2: Convert to fraction form
    221,451.90/332,080.65 = 88,287.90/x
  3. Step 3: Cross multiply
    221,451.90x = 332,080.65 × 88,287.90
  4. Step 4: Simplify right side
    221,451.90x = 29,318,703,219.14
  5. Step 5: Solve for x
    x = 29,318,703,219.14/221,451.90
  6. Step 6: Final answer
    x = 132,393.10

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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.