Home / 263,479.60-395,217.78-85,986.73

Finding the Fourth Proportional to 263,479.60, 395,217.78 and 85,986.73

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Solution

The fourth proportional to 263,479.60, 395,217.78 and 85,986.73 is: 128,979.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,479.60 : 395,217.78 = 85,986.73 : x
  2. Step 2: Convert to fraction form
    263,479.60/395,217.78 = 85,986.73/x
  3. Step 3: Cross multiply
    263,479.60x = 395,217.78 × 85,986.73
  4. Step 4: Simplify right side
    263,479.60x = 33,983,484,540.06
  5. Step 5: Solve for x
    x = 33,983,484,540.06/263,479.60
  6. Step 6: Final answer
    x = 128,979.57

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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.