Home / 408,785.04-612,405.96-209,231.88

Finding the Fourth Proportional to 408,785.04, 612,405.96 and 209,231.88

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Solution

The fourth proportional to 408,785.04, 612,405.96 and 209,231.88 is: 313,452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,785.04 : 612,405.96 = 209,231.88 : x
  2. Step 2: Convert to fraction form
    408,785.04/612,405.96 = 209,231.88/x
  3. Step 3: Cross multiply
    408,785.04x = 612,405.96 × 209,231.88
  4. Step 4: Simplify right side
    408,785.04x = 128,134,850,334.01
  5. Step 5: Solve for x
    x = 128,134,850,334.01/408,785.04
  6. Step 6: Final answer
    x = 313,452.89

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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.