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Finding the Third Proportional to 82,809 and 178,731

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Solution

The third proportional to 82,809 and 178,731 is: 385,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,809 : 178,731 = 178,731 : x
  2. Step 2: Convert to fraction form
    82,809/178,731 = 178,731/x
  3. Step 3: Cross multiply
    82,809x = 178,731 × 178,731
  4. Step 4: Simplify right side
    82,809x = 31,944,770,361
  5. Step 5: Solve for x
    x = 31,944,770,361/82,809
  6. Step 6: Final answer
    x = 385,764.47

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.