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Finding the Third Proportional to 135,963 and 319,980

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Solution

The third proportional to 135,963 and 319,980 is: 753,051.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,963 : 319,980 = 319,980 : x
  2. Step 2: Convert to fraction form
    135,963/319,980 = 319,980/x
  3. Step 3: Cross multiply
    135,963x = 319,980 × 319,980
  4. Step 4: Simplify right side
    135,963x = 102,387,200,400
  5. Step 5: Solve for x
    x = 102,387,200,400/135,963
  6. Step 6: Final answer
    x = 753,051.94

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.