Home / 263,384.26-395,139.21-85,891.48

Finding the Fourth Proportional to 263,384.26, 395,139.21 and 85,891.48

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Solution

The fourth proportional to 263,384.26, 395,139.21 and 85,891.48 is: 128,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,384.26 : 395,139.21 = 85,891.48 : x
  2. Step 2: Convert to fraction form
    263,384.26/395,139.21 = 85,891.48/x
  3. Step 3: Cross multiply
    263,384.26x = 395,139.21 × 85,891.48
  4. Step 4: Simplify right side
    263,384.26x = 33,939,091,552.93
  5. Step 5: Solve for x
    x = 33,939,091,552.93/263,384.26
  6. Step 6: Final answer
    x = 128,857.71

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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.