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Finding the Third Proportional to 76,328 and 154,812

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Solution

The third proportional to 76,328 and 154,812 is: 313,996.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,328 : 154,812 = 154,812 : x
  2. Step 2: Convert to fraction form
    76,328/154,812 = 154,812/x
  3. Step 3: Cross multiply
    76,328x = 154,812 × 154,812
  4. Step 4: Simplify right side
    76,328x = 23,966,755,344
  5. Step 5: Solve for x
    x = 23,966,755,344/76,328
  6. Step 6: Final answer
    x = 313,996.90

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.