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Finding the Third Proportional to 178,781 and 372,259

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Solution

The third proportional to 178,781 and 372,259 is: 775,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,781 : 372,259 = 372,259 : x
  2. Step 2: Convert to fraction form
    178,781/372,259 = 372,259/x
  3. Step 3: Cross multiply
    178,781x = 372,259 × 372,259
  4. Step 4: Simplify right side
    178,781x = 138,576,763,081
  5. Step 5: Solve for x
    x = 138,576,763,081/178,781
  6. Step 6: Final answer
    x = 775,120.19

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.