Home / 263,478.60-395,216.28-85,985.73

Finding the Fourth Proportional to 263,478.60, 395,216.28 and 85,985.73

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Solution

The fourth proportional to 263,478.60, 395,216.28 and 85,985.73 is: 128,978.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,478.60 : 395,216.28 = 85,985.73 : x
  2. Step 2: Convert to fraction form
    263,478.60/395,216.28 = 85,985.73/x
  3. Step 3: Cross multiply
    263,478.60x = 395,216.28 × 85,985.73
  4. Step 4: Simplify right side
    263,478.60x = 33,982,960,343.68
  5. Step 5: Solve for x
    x = 33,982,960,343.68/263,478.60
  6. Step 6: Final answer
    x = 128,978.07

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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.