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Finding the Fourth Proportional to 276,889.20, 415,528.20 and 119,230.80

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Solution

The fourth proportional to 276,889.20, 415,528.20 and 119,230.80 is: 178,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,889.20 : 415,528.20 = 119,230.80 : x
  2. Step 2: Convert to fraction form
    276,889.20/415,528.20 = 119,230.80/x
  3. Step 3: Cross multiply
    276,889.20x = 415,528.20 × 119,230.80
  4. Step 4: Simplify right side
    276,889.20x = 49,543,759,708.56
  5. Step 5: Solve for x
    x = 49,543,759,708.56/276,889.20
  6. Step 6: Final answer
    x = 178,929.91

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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.