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Finding the Third Proportional to 198,314 and 386,664

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Solution

The third proportional to 198,314 and 386,664 is: 753,900.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,314 : 386,664 = 386,664 : x
  2. Step 2: Convert to fraction form
    198,314/386,664 = 386,664/x
  3. Step 3: Cross multiply
    198,314x = 386,664 × 386,664
  4. Step 4: Simplify right side
    198,314x = 149,509,048,896
  5. Step 5: Solve for x
    x = 149,509,048,896/198,314
  6. Step 6: Final answer
    x = 753,900.63

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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.