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Finding the Third Proportional to 131,079 and 279,321

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Solution

The third proportional to 131,079 and 279,321 is: 595,215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,079 : 279,321 = 279,321 : x
  2. Step 2: Convert to fraction form
    131,079/279,321 = 279,321/x
  3. Step 3: Cross multiply
    131,079x = 279,321 × 279,321
  4. Step 4: Simplify right side
    131,079x = 78,020,221,041
  5. Step 5: Solve for x
    x = 78,020,221,041/131,079
  6. Step 6: Final answer
    x = 595,215.26

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.