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Finding the Third Proportional to 203,899 and 422,135

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Solution

The third proportional to 203,899 and 422,135 is: 873,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,899 : 422,135 = 422,135 : x
  2. Step 2: Convert to fraction form
    203,899/422,135 = 422,135/x
  3. Step 3: Cross multiply
    203,899x = 422,135 × 422,135
  4. Step 4: Simplify right side
    203,899x = 178,197,958,225
  5. Step 5: Solve for x
    x = 178,197,958,225/203,899
  6. Step 6: Final answer
    x = 873,952.10

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.