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Finding the Fourth Proportional to 311,937.35, 467,906.11 and 87,330.87

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Solution

The fourth proportional to 311,937.35, 467,906.11 and 87,330.87 is: 130,996.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,937.35 : 467,906.11 = 87,330.87 : x
  2. Step 2: Convert to fraction form
    311,937.35/467,906.11 = 87,330.87/x
  3. Step 3: Cross multiply
    311,937.35x = 467,906.11 × 87,330.87
  4. Step 4: Simplify right side
    311,937.35x = 40,862,647,981.47
  5. Step 5: Solve for x
    x = 40,862,647,981.47/311,937.35
  6. Step 6: Final answer
    x = 130,996.33

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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.