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Finding the Third Proportional to 198,320 and 434,188

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Solution

The third proportional to 198,320 and 434,188 is: 950,580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,320 : 434,188 = 434,188 : x
  2. Step 2: Convert to fraction form
    198,320/434,188 = 434,188/x
  3. Step 3: Cross multiply
    198,320x = 434,188 × 434,188
  4. Step 4: Simplify right side
    198,320x = 188,519,219,344
  5. Step 5: Solve for x
    x = 188,519,219,344/198,320
  6. Step 6: Final answer
    x = 950,580.98

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.