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Finding the Fourth Proportional to 234,771.72, 323,877.36 and 139,243.56

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Solution

The fourth proportional to 234,771.72, 323,877.36 and 139,243.56 is: 192,092.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,771.72 : 323,877.36 = 139,243.56 : x
  2. Step 2: Convert to fraction form
    234,771.72/323,877.36 = 139,243.56/x
  3. Step 3: Cross multiply
    234,771.72x = 323,877.36 × 139,243.56
  4. Step 4: Simplify right side
    234,771.72x = 45,097,836,609.80
  5. Step 5: Solve for x
    x = 45,097,836,609.80/234,771.72
  6. Step 6: Final answer
    x = 192,092.29

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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.