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Finding the Third Proportional to 155,879 and 339,054

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Solution

The third proportional to 155,879 and 339,054 is: 737,479.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,879 : 339,054 = 339,054 : x
  2. Step 2: Convert to fraction form
    155,879/339,054 = 339,054/x
  3. Step 3: Cross multiply
    155,879x = 339,054 × 339,054
  4. Step 4: Simplify right side
    155,879x = 114,957,614,916
  5. Step 5: Solve for x
    x = 114,957,614,916/155,879
  6. Step 6: Final answer
    x = 737,479.81

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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.