Home / 263,449.94-394,856.67-128,311.47

Finding the Fourth Proportional to 263,449.94, 394,856.67 and 128,311.47

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Solution

The fourth proportional to 263,449.94, 394,856.67 and 128,311.47 is: 192,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,449.94 : 394,856.67 = 128,311.47 : x
  2. Step 2: Convert to fraction form
    263,449.94/394,856.67 = 128,311.47/x
  3. Step 3: Cross multiply
    263,449.94x = 394,856.67 × 128,311.47
  4. Step 4: Simplify right side
    263,449.94x = 50,664,639,767.00
  5. Step 5: Solve for x
    x = 50,664,639,767.00/263,449.94
  6. Step 6: Final answer
    x = 192,312.21

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1.5x scale

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.