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Finding the Third Proportional to 198,685 and 425,778.50

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Solution

The third proportional to 198,685 and 425,778.50 is: 912,435.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,685 : 425,778.50 = 425,778.50 : x
  2. Step 2: Convert to fraction form
    198,685/425,778.50 = 425,778.50/x
  3. Step 3: Cross multiply
    198,685x = 425,778.50 × 425,778.50
  4. Step 4: Simplify right side
    198,685x = 181,287,331,062.25
  5. Step 5: Solve for x
    x = 181,287,331,062.25/198,685
  6. Step 6: Final answer
    x = 912,435.92

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.