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Finding the Fourth Proportional to 303,813.80, 419,287.56 and 167,859.68

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Solution

The fourth proportional to 303,813.80, 419,287.56 and 167,859.68 is: 231,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,813.80 : 419,287.56 = 167,859.68 : x
  2. Step 2: Convert to fraction form
    303,813.80/419,287.56 = 167,859.68/x
  3. Step 3: Cross multiply
    303,813.80x = 419,287.56 × 167,859.68
  4. Step 4: Simplify right side
    303,813.80x = 70,381,475,649.58
  5. Step 5: Solve for x
    x = 70,381,475,649.58/303,813.80
  6. Step 6: Final answer
    x = 231,659.90

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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.