Home / 300,760.38-451,140.48-76,121.96

Finding the Fourth Proportional to 300,760.38, 451,140.48 and 76,121.96

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Solution

The fourth proportional to 300,760.38, 451,140.48 and 76,121.96 is: 114,182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,760.38 : 451,140.48 = 76,121.96 : x
  2. Step 2: Convert to fraction form
    300,760.38/451,140.48 = 76,121.96/x
  3. Step 3: Cross multiply
    300,760.38x = 451,140.48 × 76,121.96
  4. Step 4: Simplify right side
    300,760.38x = 34,341,695,317.24
  5. Step 5: Solve for x
    x = 34,341,695,317.24/300,760.38
  6. Step 6: Final answer
    x = 114,182.91

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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.