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Finding the Third Proportional to 198,130.50 and 386,338.50

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Solution

The third proportional to 198,130.50 and 386,338.50 is: 753,328.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,130.50 : 386,338.50 = 386,338.50 : x
  2. Step 2: Convert to fraction form
    198,130.50/386,338.50 = 386,338.50/x
  3. Step 3: Cross multiply
    198,130.50x = 386,338.50 × 386,338.50
  4. Step 4: Simplify right side
    198,130.50x = 149,257,436,582.25
  5. Step 5: Solve for x
    x = 149,257,436,582.25/198,130.50
  6. Step 6: Final answer
    x = 753,328.93

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.