Home / 386,743.20-580,552.20-209,158.80

Finding the Fourth Proportional to 386,743.20, 580,552.20 and 209,158.80

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Solution

The fourth proportional to 386,743.20, 580,552.20 and 209,158.80 is: 313,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,743.20 : 580,552.20 = 209,158.80 : x
  2. Step 2: Convert to fraction form
    386,743.20/580,552.20 = 209,158.80/x
  3. Step 3: Cross multiply
    386,743.20x = 580,552.20 × 209,158.80
  4. Step 4: Simplify right side
    386,743.20x = 121,427,601,489.36
  5. Step 5: Solve for x
    x = 121,427,601,489.36/386,743.20
  6. Step 6: Final answer
    x = 313,974.76

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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.