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Finding the Fourth Proportional to 664,134, 996,201 and 220,902

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Solution

The fourth proportional to 664,134, 996,201 and 220,902 is: 331,353

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,134 : 996,201 = 220,902 : x
  2. Step 2: Convert to fraction form
    664,134/996,201 = 220,902/x
  3. Step 3: Cross multiply
    664,134x = 996,201 × 220,902
  4. Step 4: Simplify right side
    664,134x = 220,062,793,302
  5. Step 5: Solve for x
    x = 220,062,793,302/664,134
  6. Step 6: Final answer
    x = 331,353

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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.