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Finding the Fourth Proportional to 231,806.40, 347,709.60 and 119,486.40

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Solution

The fourth proportional to 231,806.40, 347,709.60 and 119,486.40 is: 179,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,806.40 : 347,709.60 = 119,486.40 : x
  2. Step 2: Convert to fraction form
    231,806.40/347,709.60 = 119,486.40/x
  3. Step 3: Cross multiply
    231,806.40x = 347,709.60 × 119,486.40
  4. Step 4: Simplify right side
    231,806.40x = 41,546,568,349.44
  5. Step 5: Solve for x
    x = 41,546,568,349.44/231,806.40
  6. Step 6: Final answer
    x = 179,229.60

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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.