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Finding the Third Proportional to 90,880 and 198,608

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Solution

The third proportional to 90,880 and 198,608 is: 434,035.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,880 : 198,608 = 198,608 : x
  2. Step 2: Convert to fraction form
    90,880/198,608 = 198,608/x
  3. Step 3: Cross multiply
    90,880x = 198,608 × 198,608
  4. Step 4: Simplify right side
    90,880x = 39,445,137,664
  5. Step 5: Solve for x
    x = 39,445,137,664/90,880
  6. Step 6: Final answer
    x = 434,035.41

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.