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Finding the Third Proportional to 220,188 and 306,378

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Solution

The third proportional to 220,188 and 306,378 is: 426,306.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,188 : 306,378 = 306,378 : x
  2. Step 2: Convert to fraction form
    220,188/306,378 = 306,378/x
  3. Step 3: Cross multiply
    220,188x = 306,378 × 306,378
  4. Step 4: Simplify right side
    220,188x = 93,867,478,884
  5. Step 5: Solve for x
    x = 93,867,478,884/220,188
  6. Step 6: Final answer
    x = 426,306.06

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.