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Finding the Fourth Proportional to 281,871.99, 422,762.97 and 82,145.67

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Solution

The fourth proportional to 281,871.99, 422,762.97 and 82,145.67 is: 123,205.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,871.99 : 422,762.97 = 82,145.67 : x
  2. Step 2: Convert to fraction form
    281,871.99/422,762.97 = 82,145.67/x
  3. Step 3: Cross multiply
    281,871.99x = 422,762.97 × 82,145.67
  4. Step 4: Simplify right side
    281,871.99x = 34,728,147,421.84
  5. Step 5: Solve for x
    x = 34,728,147,421.84/281,871.99
  6. Step 6: Final answer
    x = 123,205.39

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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.