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Finding the Fourth Proportional to 221,361.38, 332,084.73 and 71,638.82

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Solution

The fourth proportional to 221,361.38, 332,084.73 and 71,638.82 is: 107,472.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,361.38 : 332,084.73 = 71,638.82 : x
  2. Step 2: Convert to fraction form
    221,361.38/332,084.73 = 71,638.82/x
  3. Step 3: Cross multiply
    221,361.38x = 332,084.73 × 71,638.82
  4. Step 4: Simplify right side
    221,361.38x = 23,790,158,197.22
  5. Step 5: Solve for x
    x = 23,790,158,197.22/221,361.38
  6. Step 6: Final answer
    x = 107,472.04

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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.