Home / 309,487.91-464,078.75-109,778.36

Finding the Fourth Proportional to 309,487.91, 464,078.75 and 109,778.36

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Solution

The fourth proportional to 309,487.91, 464,078.75 and 109,778.36 is: 164,613.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,487.91 : 464,078.75 = 109,778.36 : x
  2. Step 2: Convert to fraction form
    309,487.91/464,078.75 = 109,778.36/x
  3. Step 3: Cross multiply
    309,487.91x = 464,078.75 × 109,778.36
  4. Step 4: Simplify right side
    309,487.91x = 50,945,801,216.56
  5. Step 5: Solve for x
    x = 50,945,801,216.56/309,487.91
  6. Step 6: Final answer
    x = 164,613.22

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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.