Home / 288,514.75-398,143.02-161,191.30

Finding the Fourth Proportional to 288,514.75, 398,143.02 and 161,191.30

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Solution

The fourth proportional to 288,514.75, 398,143.02 and 161,191.30 is: 222,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,514.75 : 398,143.02 = 161,191.30 : x
  2. Step 2: Convert to fraction form
    288,514.75/398,143.02 = 161,191.30/x
  3. Step 3: Cross multiply
    288,514.75x = 398,143.02 × 161,191.30
  4. Step 4: Simplify right side
    288,514.75x = 64,177,190,979.73
  5. Step 5: Solve for x
    x = 64,177,190,979.73/288,514.75
  6. Step 6: Final answer
    x = 222,439.90

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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.