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Finding the Third Proportional to 121,188 and 248,424

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Solution

The third proportional to 121,188 and 248,424 is: 509,245.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,188 : 248,424 = 248,424 : x
  2. Step 2: Convert to fraction form
    121,188/248,424 = 248,424/x
  3. Step 3: Cross multiply
    121,188x = 248,424 × 248,424
  4. Step 4: Simplify right side
    121,188x = 61,714,483,776
  5. Step 5: Solve for x
    x = 61,714,483,776/121,188
  6. Step 6: Final answer
    x = 509,245.83

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.