Home / 263,289.92-394,942.40-103,359.20

Finding the Fourth Proportional to 263,289.92, 394,942.40 and 103,359.20

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Solution

The fourth proportional to 263,289.92, 394,942.40 and 103,359.20 is: 155,041.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,289.92 : 394,942.40 = 103,359.20 : x
  2. Step 2: Convert to fraction form
    263,289.92/394,942.40 = 103,359.20/x
  3. Step 3: Cross multiply
    263,289.92x = 394,942.40 × 103,359.20
  4. Step 4: Simplify right side
    263,289.92x = 40,820,930,510.08
  5. Step 5: Solve for x
    x = 40,820,930,510.08/263,289.92
  6. Step 6: Final answer
    x = 155,041.75

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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.