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Finding the Third Proportional to 155,560.50 and 339,279

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Solution

The third proportional to 155,560.50 and 339,279 is: 739,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,560.50 : 339,279 = 339,279 : x
  2. Step 2: Convert to fraction form
    155,560.50/339,279 = 339,279/x
  3. Step 3: Cross multiply
    155,560.50x = 339,279 × 339,279
  4. Step 4: Simplify right side
    155,560.50x = 115,110,239,841
  5. Step 5: Solve for x
    x = 115,110,239,841/155,560.50
  6. Step 6: Final answer
    x = 739,970.88

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.