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Finding the Third Proportional to 196,963 and 305,561

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Solution

The third proportional to 196,963 and 305,561 is: 474,035.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,963 : 305,561 = 305,561 : x
  2. Step 2: Convert to fraction form
    196,963/305,561 = 305,561/x
  3. Step 3: Cross multiply
    196,963x = 305,561 × 305,561
  4. Step 4: Simplify right side
    196,963x = 93,367,524,721
  5. Step 5: Solve for x
    x = 93,367,524,721/196,963
  6. Step 6: Final answer
    x = 474,035.86

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.