Home / 263,318.20-395,039.70-85,826.20

Finding the Fourth Proportional to 263,318.20, 395,039.70 and 85,826.20

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Solution

The fourth proportional to 263,318.20, 395,039.70 and 85,826.20 is: 128,759.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,318.20 : 395,039.70 = 85,826.20 : x
  2. Step 2: Convert to fraction form
    263,318.20/395,039.70 = 85,826.20/x
  3. Step 3: Cross multiply
    263,318.20x = 395,039.70 × 85,826.20
  4. Step 4: Simplify right side
    263,318.20x = 33,904,756,300.14
  5. Step 5: Solve for x
    x = 33,904,756,300.14/263,318.20
  6. Step 6: Final answer
    x = 128,759.64

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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.