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Finding the Fourth Proportional to 664,279.92, 996,578.01 and 215,000.82

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Solution

The fourth proportional to 664,279.92, 996,578.01 and 215,000.82 is: 322,552.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,279.92 : 996,578.01 = 215,000.82 : x
  2. Step 2: Convert to fraction form
    664,279.92/996,578.01 = 215,000.82/x
  3. Step 3: Cross multiply
    664,279.92x = 996,578.01 × 215,000.82
  4. Step 4: Simplify right side
    664,279.92x = 214,265,089,343.97
  5. Step 5: Solve for x
    x = 214,265,089,343.97/664,279.92
  6. Step 6: Final answer
    x = 322,552.41

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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.