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Finding the Fourth Proportional to 221,475.40, 332,115.90 and 88,311.40

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Solution

The fourth proportional to 221,475.40, 332,115.90 and 88,311.40 is: 132,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,475.40 : 332,115.90 = 88,311.40 : x
  2. Step 2: Convert to fraction form
    221,475.40/332,115.90 = 88,311.40/x
  3. Step 3: Cross multiply
    221,475.40x = 332,115.90 × 88,311.40
  4. Step 4: Simplify right side
    221,475.40x = 29,329,620,091.26
  5. Step 5: Solve for x
    x = 29,329,620,091.26/221,475.40
  6. Step 6: Final answer
    x = 132,428.34

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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.