Home / 204,078.90-305,863.20-104,278.80

Finding the Fourth Proportional to 204,078.90, 305,863.20 and 104,278.80

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Solution

The fourth proportional to 204,078.90, 305,863.20 and 104,278.80 is: 156,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,078.90 : 305,863.20 = 104,278.80 : x
  2. Step 2: Convert to fraction form
    204,078.90/305,863.20 = 104,278.80/x
  3. Step 3: Cross multiply
    204,078.90x = 305,863.20 × 104,278.80
  4. Step 4: Simplify right side
    204,078.90x = 31,895,047,460.16
  5. Step 5: Solve for x
    x = 31,895,047,460.16/204,078.90
  6. Step 6: Final answer
    x = 156,287.83

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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.