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Finding the Fourth Proportional to 372,679.20, 558,846.72 and 119,912.64

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Solution

The fourth proportional to 372,679.20, 558,846.72 and 119,912.64 is: 179,813.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,679.20 : 558,846.72 = 119,912.64 : x
  2. Step 2: Convert to fraction form
    372,679.20/558,846.72 = 119,912.64/x
  3. Step 3: Cross multiply
    372,679.20x = 558,846.72 × 119,912.64
  4. Step 4: Simplify right side
    372,679.20x = 67,012,785,550.54
  5. Step 5: Solve for x
    x = 67,012,785,550.54/372,679.20
  6. Step 6: Final answer
    x = 179,813.59

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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.