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Finding the Third Proportional to 257,538 and 409,795

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Solution

The third proportional to 257,538 and 409,795 is: 652,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,538 : 409,795 = 409,795 : x
  2. Step 2: Convert to fraction form
    257,538/409,795 = 409,795/x
  3. Step 3: Cross multiply
    257,538x = 409,795 × 409,795
  4. Step 4: Simplify right side
    257,538x = 167,931,942,025
  5. Step 5: Solve for x
    x = 167,931,942,025/257,538
  6. Step 6: Final answer
    x = 652,066.65

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.