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Finding the Fourth Proportional to 664,419.80, 996,435.30 and 237,906.20

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Solution

The fourth proportional to 664,419.80, 996,435.30 and 237,906.20 is: 356,789.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,419.80 : 996,435.30 = 237,906.20 : x
  2. Step 2: Convert to fraction form
    664,419.80/996,435.30 = 237,906.20/x
  3. Step 3: Cross multiply
    664,419.80x = 996,435.30 × 237,906.20
  4. Step 4: Simplify right side
    664,419.80x = 237,058,135,768.86
  5. Step 5: Solve for x
    x = 237,058,135,768.86/664,419.80
  6. Step 6: Final answer
    x = 356,789.69

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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.