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Finding the Third Proportional to 166,807 and 258,189

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Solution

The third proportional to 166,807 and 258,189 is: 399,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,807 : 258,189 = 258,189 : x
  2. Step 2: Convert to fraction form
    166,807/258,189 = 258,189/x
  3. Step 3: Cross multiply
    166,807x = 258,189 × 258,189
  4. Step 4: Simplify right side
    166,807x = 66,661,559,721
  5. Step 5: Solve for x
    x = 66,661,559,721/166,807
  6. Step 6: Final answer
    x = 399,632.87

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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.