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Finding the Fourth Proportional to 230,791.44, 318,479.24 and 128,823.48

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Solution

The fourth proportional to 230,791.44, 318,479.24 and 128,823.48 is: 177,769.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,791.44 : 318,479.24 = 128,823.48 : x
  2. Step 2: Convert to fraction form
    230,791.44/318,479.24 = 128,823.48/x
  3. Step 3: Cross multiply
    230,791.44x = 318,479.24 × 128,823.48
  4. Step 4: Simplify right side
    230,791.44x = 41,027,604,004.56
  5. Step 5: Solve for x
    x = 41,027,604,004.56/230,791.44
  6. Step 6: Final answer
    x = 177,769.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.