Home / 222,758.20-334,137.30-128,279.80

Finding the Fourth Proportional to 222,758.20, 334,137.30 and 128,279.80

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Solution

The fourth proportional to 222,758.20, 334,137.30 and 128,279.80 is: 192,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,758.20 : 334,137.30 = 128,279.80 : x
  2. Step 2: Convert to fraction form
    222,758.20/334,137.30 = 128,279.80/x
  3. Step 3: Cross multiply
    222,758.20x = 334,137.30 × 128,279.80
  4. Step 4: Simplify right side
    222,758.20x = 42,863,066,016.54
  5. Step 5: Solve for x
    x = 42,863,066,016.54/222,758.20
  6. Step 6: Final answer
    x = 192,419.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.