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Finding the Fourth Proportional to 279,382.46, 419,138.75 and 79,705.58

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Solution

The fourth proportional to 279,382.46, 419,138.75 and 79,705.58 is: 119,576.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,382.46 : 419,138.75 = 79,705.58 : x
  2. Step 2: Convert to fraction form
    279,382.46/419,138.75 = 79,705.58/x
  3. Step 3: Cross multiply
    279,382.46x = 419,138.75 × 79,705.58
  4. Step 4: Simplify right side
    279,382.46x = 33,407,697,169.23
  5. Step 5: Solve for x
    x = 33,407,697,169.23/279,382.46
  6. Step 6: Final answer
    x = 119,576.93

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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.