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Finding the Third Proportional to 198,693 and 423,630

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Solution

The third proportional to 198,693 and 423,630 is: 903,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,693 : 423,630 = 423,630 : x
  2. Step 2: Convert to fraction form
    198,693/423,630 = 423,630/x
  3. Step 3: Cross multiply
    198,693x = 423,630 × 423,630
  4. Step 4: Simplify right side
    198,693x = 179,462,376,900
  5. Step 5: Solve for x
    x = 179,462,376,900/198,693
  6. Step 6: Final answer
    x = 903,214.39

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.