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Finding the Fourth Proportional to 221,915.10, 332,865.36 and 88,759.61

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Solution

The fourth proportional to 221,915.10, 332,865.36 and 88,759.61 is: 133,136.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,915.10 : 332,865.36 = 88,759.61 : x
  2. Step 2: Convert to fraction form
    221,915.10/332,865.36 = 88,759.61/x
  3. Step 3: Cross multiply
    221,915.10x = 332,865.36 × 88,759.61
  4. Step 4: Simplify right side
    221,915.10x = 29,544,999,536.11
  5. Step 5: Solve for x
    x = 29,544,999,536.11/221,915.10
  6. Step 6: Final answer
    x = 133,136.50

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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.