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Finding the Third Proportional to 202,486 and 409,255

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Solution

The third proportional to 202,486 and 409,255 is: 827,166.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,486 : 409,255 = 409,255 : x
  2. Step 2: Convert to fraction form
    202,486/409,255 = 409,255/x
  3. Step 3: Cross multiply
    202,486x = 409,255 × 409,255
  4. Step 4: Simplify right side
    202,486x = 167,489,655,025
  5. Step 5: Solve for x
    x = 167,489,655,025/202,486
  6. Step 6: Final answer
    x = 827,166.59

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.