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Finding the Fourth Proportional to 222,765.20, 334,147.80 and 128,286.80

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Solution

The fourth proportional to 222,765.20, 334,147.80 and 128,286.80 is: 192,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,765.20 : 334,147.80 = 128,286.80 : x
  2. Step 2: Convert to fraction form
    222,765.20/334,147.80 = 128,286.80/x
  3. Step 3: Cross multiply
    222,765.20x = 334,147.80 × 128,286.80
  4. Step 4: Simplify right side
    222,765.20x = 42,866,751,989.04
  5. Step 5: Solve for x
    x = 42,866,751,989.04/222,765.20
  6. Step 6: Final answer
    x = 192,430.20

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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.