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Finding the Third Proportional to 198,918 and 314,982

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Solution

The third proportional to 198,918 and 314,982 is: 498,766.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,918 : 314,982 = 314,982 : x
  2. Step 2: Convert to fraction form
    198,918/314,982 = 314,982/x
  3. Step 3: Cross multiply
    198,918x = 314,982 × 314,982
  4. Step 4: Simplify right side
    198,918x = 99,213,660,324
  5. Step 5: Solve for x
    x = 99,213,660,324/198,918
  6. Step 6: Final answer
    x = 498,766.63

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.