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Finding the Third Proportional to 166,815 and 258,493

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Solution

The third proportional to 166,815 and 258,493 is: 400,555.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,815 : 258,493 = 258,493 : x
  2. Step 2: Convert to fraction form
    166,815/258,493 = 258,493/x
  3. Step 3: Cross multiply
    166,815x = 258,493 × 258,493
  4. Step 4: Simplify right side
    166,815x = 66,818,631,049
  5. Step 5: Solve for x
    x = 66,818,631,049/166,815
  6. Step 6: Final answer
    x = 400,555.29

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.