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Finding the Third Proportional to 90,894 and 198,313

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Solution

The third proportional to 90,894 and 198,313 is: 432,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,894 : 198,313 = 198,313 : x
  2. Step 2: Convert to fraction form
    90,894/198,313 = 198,313/x
  3. Step 3: Cross multiply
    90,894x = 198,313 × 198,313
  4. Step 4: Simplify right side
    90,894x = 39,328,045,969
  5. Step 5: Solve for x
    x = 39,328,045,969/90,894
  6. Step 6: Final answer
    x = 432,680.33

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.