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Finding the Third Proportional to 121,274 and 248,378

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Solution

The third proportional to 121,274 and 248,378 is: 508,696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,274 : 248,378 = 248,378 : x
  2. Step 2: Convert to fraction form
    121,274/248,378 = 248,378/x
  3. Step 3: Cross multiply
    121,274x = 248,378 × 248,378
  4. Step 4: Simplify right side
    121,274x = 61,691,630,884
  5. Step 5: Solve for x
    x = 61,691,630,884/121,274
  6. Step 6: Final answer
    x = 508,696.27

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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.