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Finding the Fourth Proportional to 664,301.82, 996,610.92 and 215,022.78

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Solution

The fourth proportional to 664,301.82, 996,610.92 and 215,022.78 is: 322,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,301.82 : 996,610.92 = 215,022.78 : x
  2. Step 2: Convert to fraction form
    664,301.82/996,610.92 = 215,022.78/x
  3. Step 3: Cross multiply
    664,301.82x = 996,610.92 × 215,022.78
  4. Step 4: Simplify right side
    664,301.82x = 214,294,050,596.76
  5. Step 5: Solve for x
    x = 214,294,050,596.76/664,301.82
  6. Step 6: Final answer
    x = 322,585.37

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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.