Home / 225,632.40-338,578.20-85,491.60

Finding the Fourth Proportional to 225,632.40, 338,578.20 and 85,491.60

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Solution

The fourth proportional to 225,632.40, 338,578.20 and 85,491.60 is: 128,286.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,632.40 : 338,578.20 = 85,491.60 : x
  2. Step 2: Convert to fraction form
    225,632.40/338,578.20 = 85,491.60/x
  3. Step 3: Cross multiply
    225,632.40x = 338,578.20 × 85,491.60
  4. Step 4: Simplify right side
    225,632.40x = 28,945,592,043.12
  5. Step 5: Solve for x
    x = 28,945,592,043.12/225,632.40
  6. Step 6: Final answer
    x = 128,286.51

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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.