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Finding the Third Proportional to 133,218 and 199,422

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Solution

The third proportional to 133,218 and 199,422 is: 298,526.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,218 : 199,422 = 199,422 : x
  2. Step 2: Convert to fraction form
    133,218/199,422 = 199,422/x
  3. Step 3: Cross multiply
    133,218x = 199,422 × 199,422
  4. Step 4: Simplify right side
    133,218x = 39,769,134,084
  5. Step 5: Solve for x
    x = 39,769,134,084/133,218
  6. Step 6: Final answer
    x = 298,526.73

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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.