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Finding the Third Proportional to 198,558 and 432,099

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Solution

The third proportional to 198,558 and 432,099 is: 940,327.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,558 : 432,099 = 432,099 : x
  2. Step 2: Convert to fraction form
    198,558/432,099 = 432,099/x
  3. Step 3: Cross multiply
    198,558x = 432,099 × 432,099
  4. Step 4: Simplify right side
    198,558x = 186,709,545,801
  5. Step 5: Solve for x
    x = 186,709,545,801/198,558
  6. Step 6: Final answer
    x = 940,327.49

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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.