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Finding the Third Proportional to 181,710 and 391,182

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Solution

The third proportional to 181,710 and 391,182 is: 842,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,710 : 391,182 = 391,182 : x
  2. Step 2: Convert to fraction form
    181,710/391,182 = 391,182/x
  3. Step 3: Cross multiply
    181,710x = 391,182 × 391,182
  4. Step 4: Simplify right side
    181,710x = 153,023,357,124
  5. Step 5: Solve for x
    x = 153,023,357,124/181,710
  6. Step 6: Final answer
    x = 842,129.53

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.