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Finding the Fourth Proportional to 318,028.82, 438,861.21 and 174,788.97

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Solution

The fourth proportional to 318,028.82, 438,861.21 and 174,788.97 is: 241,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,028.82 : 438,861.21 = 174,788.97 : x
  2. Step 2: Convert to fraction form
    318,028.82/438,861.21 = 174,788.97/x
  3. Step 3: Cross multiply
    318,028.82x = 438,861.21 × 174,788.97
  4. Step 4: Simplify right side
    318,028.82x = 76,708,098,868.85
  5. Step 5: Solve for x
    x = 76,708,098,868.85/318,028.82
  6. Step 6: Final answer
    x = 241,198.58

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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.