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Finding the Fourth Proportional to 283,081.28, 390,662.92 and 162,245.88

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Solution

The fourth proportional to 283,081.28, 390,662.92 and 162,245.88 is: 223,905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,081.28 : 390,662.92 = 162,245.88 : x
  2. Step 2: Convert to fraction form
    283,081.28/390,662.92 = 162,245.88/x
  3. Step 3: Cross multiply
    283,081.28x = 390,662.92 × 162,245.88
  4. Step 4: Simplify right side
    283,081.28x = 63,383,449,441.58
  5. Step 5: Solve for x
    x = 63,383,449,441.58/283,081.28
  6. Step 6: Final answer
    x = 223,905.48

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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.