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Finding the Third Proportional to 131,721 and 284,178

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Solution

The third proportional to 131,721 and 284,178 is: 613,092.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,721 : 284,178 = 284,178 : x
  2. Step 2: Convert to fraction form
    131,721/284,178 = 284,178/x
  3. Step 3: Cross multiply
    131,721x = 284,178 × 284,178
  4. Step 4: Simplify right side
    131,721x = 80,757,135,684
  5. Step 5: Solve for x
    x = 80,757,135,684/131,721
  6. Step 6: Final answer
    x = 613,092.34

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.