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Finding the Third Proportional to 166,258 and 257,965

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Solution

The third proportional to 166,258 and 257,965 is: 400,257.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,258 : 257,965 = 257,965 : x
  2. Step 2: Convert to fraction form
    166,258/257,965 = 257,965/x
  3. Step 3: Cross multiply
    166,258x = 257,965 × 257,965
  4. Step 4: Simplify right side
    166,258x = 66,545,941,225
  5. Step 5: Solve for x
    x = 66,545,941,225/166,258
  6. Step 6: Final answer
    x = 400,257.08

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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.