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Finding the Third Proportional to 198,313.50 and 386,664

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Solution

The third proportional to 198,313.50 and 386,664 is: 753,902.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,313.50 : 386,664 = 386,664 : x
  2. Step 2: Convert to fraction form
    198,313.50/386,664 = 386,664/x
  3. Step 3: Cross multiply
    198,313.50x = 386,664 × 386,664
  4. Step 4: Simplify right side
    198,313.50x = 149,509,048,896
  5. Step 5: Solve for x
    x = 149,509,048,896/198,313.50
  6. Step 6: Final answer
    x = 753,902.53

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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.