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Finding the Fourth Proportional to 235,379.05, 324,850.31 and 139,884.91

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Solution

The fourth proportional to 235,379.05, 324,850.31 and 139,884.91 is: 193,057.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,379.05 : 324,850.31 = 139,884.91 : x
  2. Step 2: Convert to fraction form
    235,379.05/324,850.31 = 139,884.91/x
  3. Step 3: Cross multiply
    235,379.05x = 324,850.31 × 139,884.91
  4. Step 4: Simplify right side
    235,379.05x = 45,441,656,377.82
  5. Step 5: Solve for x
    x = 45,441,656,377.82/235,379.05
  6. Step 6: Final answer
    x = 193,057.35

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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.