Home / 288,621.72-398,263.46-159,542.75

Finding the Fourth Proportional to 288,621.72, 398,263.46 and 159,542.75

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Solution

The fourth proportional to 288,621.72, 398,263.46 and 159,542.75 is: 220,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,621.72 : 398,263.46 = 159,542.75 : x
  2. Step 2: Convert to fraction form
    288,621.72/398,263.46 = 159,542.75/x
  3. Step 3: Cross multiply
    288,621.72x = 398,263.46 × 159,542.75
  4. Step 4: Simplify right side
    288,621.72x = 63,540,047,830.86
  5. Step 5: Solve for x
    x = 63,540,047,830.86/288,621.72
  6. Step 6: Final answer
    x = 220,149.92

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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.