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Finding the Fourth Proportional to 281,396.34, 422,099.91 and 103,811.94

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Solution

The fourth proportional to 281,396.34, 422,099.91 and 103,811.94 is: 155,719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,396.34 : 422,099.91 = 103,811.94 : x
  2. Step 2: Convert to fraction form
    281,396.34/422,099.91 = 103,811.94/x
  3. Step 3: Cross multiply
    281,396.34x = 422,099.91 × 103,811.94
  4. Step 4: Simplify right side
    281,396.34x = 43,819,010,530.93
  5. Step 5: Solve for x
    x = 43,819,010,530.93/281,396.34
  6. Step 6: Final answer
    x = 155,719.90

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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.