Home / 394,161.31-543,942.46-212,873.28

Finding the Fourth Proportional to 394,161.31, 543,942.46 and 212,873.28

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Solution

The fourth proportional to 394,161.31, 543,942.46 and 212,873.28 is: 293,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,161.31 : 543,942.46 = 212,873.28 : x
  2. Step 2: Convert to fraction form
    394,161.31/543,942.46 = 212,873.28/x
  3. Step 3: Cross multiply
    394,161.31x = 543,942.46 × 212,873.28
  4. Step 4: Simplify right side
    394,161.31x = 115,790,815,591.47
  5. Step 5: Solve for x
    x = 115,790,815,591.47/394,161.31
  6. Step 6: Final answer
    x = 293,765.05

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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.