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Finding the Third Proportional to 201,120 and 418,775

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Solution

The third proportional to 201,120 and 418,775 is: 871,979.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,120 : 418,775 = 418,775 : x
  2. Step 2: Convert to fraction form
    201,120/418,775 = 418,775/x
  3. Step 3: Cross multiply
    201,120x = 418,775 × 418,775
  4. Step 4: Simplify right side
    201,120x = 175,372,500,625
  5. Step 5: Solve for x
    x = 175,372,500,625/201,120
  6. Step 6: Final answer
    x = 871,979.42

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.