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Finding the Fourth Proportional to 303,879.24, 419,353.21 and 167,912

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Solution

The fourth proportional to 303,879.24, 419,353.21 and 167,912 is: 231,718.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,879.24 : 419,353.21 = 167,912 : x
  2. Step 2: Convert to fraction form
    303,879.24/419,353.21 = 167,912/x
  3. Step 3: Cross multiply
    303,879.24x = 419,353.21 × 167,912
  4. Step 4: Simplify right side
    303,879.24x = 70,414,436,197.52
  5. Step 5: Solve for x
    x = 70,414,436,197.52/303,879.24
  6. Step 6: Final answer
    x = 231,718.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.