Home / 263,406.78-395,069.94-85,913.46

Finding the Fourth Proportional to 263,406.78, 395,069.94 and 85,913.46

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Solution

The fourth proportional to 263,406.78, 395,069.94 and 85,913.46 is: 128,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,406.78 : 395,069.94 = 85,913.46 : x
  2. Step 2: Convert to fraction form
    263,406.78/395,069.94 = 85,913.46/x
  3. Step 3: Cross multiply
    263,406.78x = 395,069.94 × 85,913.46
  4. Step 4: Simplify right side
    263,406.78x = 33,941,825,487.39
  5. Step 5: Solve for x
    x = 33,941,825,487.39/263,406.78
  6. Step 6: Final answer
    x = 128,857.07

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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.