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Finding the Fourth Proportional to 281,611.88, 422,418.73 and 71,249.82

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Solution

The fourth proportional to 281,611.88, 422,418.73 and 71,249.82 is: 106,874.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,611.88 : 422,418.73 = 71,249.82 : x
  2. Step 2: Convert to fraction form
    281,611.88/422,418.73 = 71,249.82/x
  3. Step 3: Cross multiply
    281,611.88x = 422,418.73 × 71,249.82
  4. Step 4: Simplify right side
    281,611.88x = 30,097,258,477.13
  5. Step 5: Solve for x
    x = 30,097,258,477.13/281,611.88
  6. Step 6: Final answer
    x = 106,874.96

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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.