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Finding the Fourth Proportional to 221,151.57, 331,748.88 and 88,000.71

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Solution

The fourth proportional to 221,151.57, 331,748.88 and 88,000.71 is: 132,009.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,151.57 : 331,748.88 = 88,000.71 : x
  2. Step 2: Convert to fraction form
    221,151.57/331,748.88 = 88,000.71/x
  3. Step 3: Cross multiply
    221,151.57x = 331,748.88 × 88,000.71
  4. Step 4: Simplify right side
    221,151.57x = 29,194,136,981.70
  5. Step 5: Solve for x
    x = 29,194,136,981.70/221,151.57
  6. Step 6: Final answer
    x = 132,009.63

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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.