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Finding the Fourth Proportional to 311,375.34, 467,128.62 and 100,996.88

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Solution

The fourth proportional to 311,375.34, 467,128.62 and 100,996.88 is: 151,516.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,375.34 : 467,128.62 = 100,996.88 : x
  2. Step 2: Convert to fraction form
    311,375.34/467,128.62 = 100,996.88/x
  3. Step 3: Cross multiply
    311,375.34x = 467,128.62 × 100,996.88
  4. Step 4: Simplify right side
    311,375.34x = 47,178,530,843.06
  5. Step 5: Solve for x
    x = 47,178,530,843.06/311,375.34
  6. Step 6: Final answer
    x = 151,516.59

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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.