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Finding the Third Proportional to 202,427 and 291,611

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Solution

The third proportional to 202,427 and 291,611 is: 420,087.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,427 : 291,611 = 291,611 : x
  2. Step 2: Convert to fraction form
    202,427/291,611 = 291,611/x
  3. Step 3: Cross multiply
    202,427x = 291,611 × 291,611
  4. Step 4: Simplify right side
    202,427x = 85,036,975,321
  5. Step 5: Solve for x
    x = 85,036,975,321/202,427
  6. Step 6: Final answer
    x = 420,087.12

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.