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Finding the Third Proportional to 198,036 and 427,637

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Solution

The third proportional to 198,036 and 427,637 is: 923,435.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,036 : 427,637 = 427,637 : x
  2. Step 2: Convert to fraction form
    198,036/427,637 = 427,637/x
  3. Step 3: Cross multiply
    198,036x = 427,637 × 427,637
  4. Step 4: Simplify right side
    198,036x = 182,873,403,769
  5. Step 5: Solve for x
    x = 182,873,403,769/198,036
  6. Step 6: Final answer
    x = 923,435.15

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.