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Finding the Third Proportional to 153,879 and 231,831

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Solution

The third proportional to 153,879 and 231,831 is: 349,271.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,879 : 231,831 = 231,831 : x
  2. Step 2: Convert to fraction form
    153,879/231,831 = 231,831/x
  3. Step 3: Cross multiply
    153,879x = 231,831 × 231,831
  4. Step 4: Simplify right side
    153,879x = 53,745,612,561
  5. Step 5: Solve for x
    x = 53,745,612,561/153,879
  6. Step 6: Final answer
    x = 349,271.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.