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Finding the Fourth Proportional to 303,855.87, 419,319.38 and 167,889.86

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Solution

The fourth proportional to 303,855.87, 419,319.38 and 167,889.86 is: 231,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,855.87 : 419,319.38 = 167,889.86 : x
  2. Step 2: Convert to fraction form
    303,855.87/419,319.38 = 167,889.86/x
  3. Step 3: Cross multiply
    303,855.87x = 419,319.38 × 167,889.86
  4. Step 4: Simplify right side
    303,855.87x = 70,399,472,003.49
  5. Step 5: Solve for x
    x = 70,399,472,003.49/303,855.87
  6. Step 6: Final answer
    x = 231,687.06

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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.