Home / 288,781.20-398,358.08-167,909.12

Finding the Fourth Proportional to 288,781.20, 398,358.08 and 167,909.12

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Solution

The fourth proportional to 288,781.20, 398,358.08 and 167,909.12 is: 231,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,781.20 : 398,358.08 = 167,909.12 : x
  2. Step 2: Convert to fraction form
    288,781.20/398,358.08 = 167,909.12/x
  3. Step 3: Cross multiply
    288,781.20x = 398,358.08 × 167,909.12
  4. Step 4: Simplify right side
    288,781.20x = 66,887,954,657.69
  5. Step 5: Solve for x
    x = 66,887,954,657.69/288,781.20
  6. Step 6: Final answer
    x = 231,621.57

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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.