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Finding the Fourth Proportional to 499,063.28, 748,372.56 and 143,992.91

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Solution

The fourth proportional to 499,063.28, 748,372.56 and 143,992.91 is: 215,925.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,063.28 : 748,372.56 = 143,992.91 : x
  2. Step 2: Convert to fraction form
    499,063.28/748,372.56 = 143,992.91/x
  3. Step 3: Cross multiply
    499,063.28x = 748,372.56 × 143,992.91
  4. Step 4: Simplify right side
    499,063.28x = 107,760,342,678.55
  5. Step 5: Solve for x
    x = 107,760,342,678.55/499,063.28
  6. Step 6: Final answer
    x = 215,925.21

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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.