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Finding the Third Proportional to 272,188 and 408,554

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Solution

The third proportional to 272,188 and 408,554 is: 613,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,188 : 408,554 = 408,554 : x
  2. Step 2: Convert to fraction form
    272,188/408,554 = 408,554/x
  3. Step 3: Cross multiply
    272,188x = 408,554 × 408,554
  4. Step 4: Simplify right side
    272,188x = 166,916,370,916
  5. Step 5: Solve for x
    x = 166,916,370,916/272,188
  6. Step 6: Final answer
    x = 613,239.27

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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.