Home / 394,278.42-543,914.55-258,253.50

Finding the Fourth Proportional to 394,278.42, 543,914.55 and 258,253.50

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Solution

The fourth proportional to 394,278.42, 543,914.55 and 258,253.50 is: 356,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,278.42 : 543,914.55 = 258,253.50 : x
  2. Step 2: Convert to fraction form
    394,278.42/543,914.55 = 258,253.50/x
  3. Step 3: Cross multiply
    394,278.42x = 543,914.55 × 258,253.50
  4. Step 4: Simplify right side
    394,278.42x = 140,467,836,238.43
  5. Step 5: Solve for x
    x = 140,467,836,238.43/394,278.42
  6. Step 6: Final answer
    x = 356,265.60

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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.