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Finding the Fourth Proportional to 276,812.86, 415,219.30 and 66,450.80

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Solution

The fourth proportional to 276,812.86, 415,219.30 and 66,450.80 is: 99,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,812.86 : 415,219.30 = 66,450.80 : x
  2. Step 2: Convert to fraction form
    276,812.86/415,219.30 = 66,450.80/x
  3. Step 3: Cross multiply
    276,812.86x = 415,219.30 × 66,450.80
  4. Step 4: Simplify right side
    276,812.86x = 27,591,654,660.44
  5. Step 5: Solve for x
    x = 27,591,654,660.44/276,812.86
  6. Step 6: Final answer
    x = 99,676.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.