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Finding the Third Proportional to 276,920 and 396,000.50

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Solution

The third proportional to 276,920 and 396,000.50 is: 566,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,920 : 396,000.50 = 396,000.50 : x
  2. Step 2: Convert to fraction form
    276,920/396,000.50 = 396,000.50/x
  3. Step 3: Cross multiply
    276,920x = 396,000.50 × 396,000.50
  4. Step 4: Simplify right side
    276,920x = 156,816,396,000.25
  5. Step 5: Solve for x
    x = 156,816,396,000.25/276,920
  6. Step 6: Final answer
    x = 566,287.72

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.