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Finding the Fourth Proportional to 303,685.56, 419,081.31 and 167,716.17

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Solution

The fourth proportional to 303,685.56, 419,081.31 and 167,716.17 is: 231,445.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,685.56 : 419,081.31 = 167,716.17 : x
  2. Step 2: Convert to fraction form
    303,685.56/419,081.31 = 167,716.17/x
  3. Step 3: Cross multiply
    303,685.56x = 419,081.31 × 167,716.17
  4. Step 4: Simplify right side
    303,685.56x = 70,286,712,231.78
  5. Step 5: Solve for x
    x = 70,286,712,231.78/303,685.56
  6. Step 6: Final answer
    x = 231,445.68

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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.