Home / 312,778.57-469,167.90-76,121.25

Finding the Fourth Proportional to 312,778.57, 469,167.90 and 76,121.25

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Solution

The fourth proportional to 312,778.57, 469,167.90 and 76,121.25 is: 114,181.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,778.57 : 469,167.90 = 76,121.25 : x
  2. Step 2: Convert to fraction form
    312,778.57/469,167.90 = 76,121.25/x
  3. Step 3: Cross multiply
    312,778.57x = 469,167.90 × 76,121.25
  4. Step 4: Simplify right side
    312,778.57x = 35,713,647,007.88
  5. Step 5: Solve for x
    x = 35,713,647,007.88/312,778.57
  6. Step 6: Final answer
    x = 114,181.89

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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.