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Finding the Fourth Proportional to 281,392, 422,191.68 and 148,266.88

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Solution

The fourth proportional to 281,392, 422,191.68 and 148,266.88 is: 222,454.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,392 : 422,191.68 = 148,266.88 : x
  2. Step 2: Convert to fraction form
    281,392/422,191.68 = 148,266.88/x
  3. Step 3: Cross multiply
    281,392x = 422,191.68 × 148,266.88
  4. Step 4: Simplify right side
    281,392x = 62,597,043,155.56
  5. Step 5: Solve for x
    x = 62,597,043,155.56/281,392
  6. Step 6: Final answer
    x = 222,454.95

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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.