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Finding the Fourth Proportional to 664,604.52, 997,063.92 and 215,324.66

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Solution

The fourth proportional to 664,604.52, 997,063.92 and 215,324.66 is: 323,037.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,604.52 : 997,063.92 = 215,324.66 : x
  2. Step 2: Convert to fraction form
    664,604.52/997,063.92 = 215,324.66/x
  3. Step 3: Cross multiply
    664,604.52x = 997,063.92 × 215,324.66
  4. Step 4: Simplify right side
    664,604.52x = 214,692,449,572.27
  5. Step 5: Solve for x
    x = 214,692,449,572.27/664,604.52
  6. Step 6: Final answer
    x = 323,037.90

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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.