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Finding the Third Proportional to 257,202 and 409,275

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Solution

The third proportional to 257,202 and 409,275 is: 651,262.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,202 : 409,275 = 409,275 : x
  2. Step 2: Convert to fraction form
    257,202/409,275 = 409,275/x
  3. Step 3: Cross multiply
    257,202x = 409,275 × 409,275
  4. Step 4: Simplify right side
    257,202x = 167,506,025,625
  5. Step 5: Solve for x
    x = 167,506,025,625/257,202
  6. Step 6: Final answer
    x = 651,262.53

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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.