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Finding the Third Proportional to 171,813 and 258,045

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Solution

The third proportional to 171,813 and 258,045 is: 387,556.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,813 : 258,045 = 258,045 : x
  2. Step 2: Convert to fraction form
    171,813/258,045 = 258,045/x
  3. Step 3: Cross multiply
    171,813x = 258,045 × 258,045
  4. Step 4: Simplify right side
    171,813x = 66,587,222,025
  5. Step 5: Solve for x
    x = 66,587,222,025/171,813
  6. Step 6: Final answer
    x = 387,556.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.