Home / 222,191.28-306,305-158,418.36

Finding the Fourth Proportional to 222,191.28, 306,305 and 158,418.36

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Solution

The fourth proportional to 222,191.28, 306,305 and 158,418.36 is: 218,389.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,191.28 : 306,305 = 158,418.36 : x
  2. Step 2: Convert to fraction form
    222,191.28/306,305 = 158,418.36/x
  3. Step 3: Cross multiply
    222,191.28x = 306,305 × 158,418.36
  4. Step 4: Simplify right side
    222,191.28x = 48,524,335,759.80
  5. Step 5: Solve for x
    x = 48,524,335,759.80/222,191.28
  6. Step 6: Final answer
    x = 218,389.92

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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.