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Finding the Fourth Proportional to 263,189.82, 394,935.21 and 111,374.94

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Solution

The fourth proportional to 263,189.82, 394,935.21 and 111,374.94 is: 167,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,189.82 : 394,935.21 = 111,374.94 : x
  2. Step 2: Convert to fraction form
    263,189.82/394,935.21 = 111,374.94/x
  3. Step 3: Cross multiply
    263,189.82x = 394,935.21 × 111,374.94
  4. Step 4: Simplify right side
    263,189.82x = 43,985,885,317.64
  5. Step 5: Solve for x
    x = 43,985,885,317.64/263,189.82
  6. Step 6: Final answer
    x = 167,126.09

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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.