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Finding the Third Proportional to 90,792 and 198,809

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Solution

The third proportional to 90,792 and 198,809 is: 435,335.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,792 : 198,809 = 198,809 : x
  2. Step 2: Convert to fraction form
    90,792/198,809 = 198,809/x
  3. Step 3: Cross multiply
    90,792x = 198,809 × 198,809
  4. Step 4: Simplify right side
    90,792x = 39,525,018,481
  5. Step 5: Solve for x
    x = 39,525,018,481/90,792
  6. Step 6: Final answer
    x = 435,335.92

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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.