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Finding the Third Proportional to 272,018 and 408,265

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Solution

The third proportional to 272,018 and 408,265 is: 612,754.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,018 : 408,265 = 408,265 : x
  2. Step 2: Convert to fraction form
    272,018/408,265 = 408,265/x
  3. Step 3: Cross multiply
    272,018x = 408,265 × 408,265
  4. Step 4: Simplify right side
    272,018x = 166,680,310,225
  5. Step 5: Solve for x
    x = 166,680,310,225/272,018
  6. Step 6: Final answer
    x = 612,754.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.