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Finding the Fourth Proportional to 493,179.87, 739,711.89 and 138,222.48

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Solution

The fourth proportional to 493,179.87, 739,711.89 and 138,222.48 is: 207,317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,179.87 : 739,711.89 = 138,222.48 : x
  2. Step 2: Convert to fraction form
    493,179.87/739,711.89 = 138,222.48/x
  3. Step 3: Cross multiply
    493,179.87x = 739,711.89 × 138,222.48
  4. Step 4: Simplify right side
    493,179.87x = 102,244,811,921.29
  5. Step 5: Solve for x
    x = 102,244,811,921.29/493,179.87
  6. Step 6: Final answer
    x = 207,317.49

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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.