Home / 263,579.82-395,218.20-81,163.32

Finding the Fourth Proportional to 263,579.82, 395,218.20 and 81,163.32

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Solution

The fourth proportional to 263,579.82, 395,218.20 and 81,163.32 is: 121,698.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,579.82 : 395,218.20 = 81,163.32 : x
  2. Step 2: Convert to fraction form
    263,579.82/395,218.20 = 81,163.32/x
  3. Step 3: Cross multiply
    263,579.82x = 395,218.20 × 81,163.32
  4. Step 4: Simplify right side
    263,579.82x = 32,077,221,236.42
  5. Step 5: Solve for x
    x = 32,077,221,236.42/263,579.82
  6. Step 6: Final answer
    x = 121,698.32

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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.