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Finding the Fourth Proportional to 228,865.28, 343,213.65 and 79,067.12

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Solution

The fourth proportional to 228,865.28, 343,213.65 and 79,067.12 is: 118,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,865.28 : 343,213.65 = 79,067.12 : x
  2. Step 2: Convert to fraction form
    228,865.28/343,213.65 = 79,067.12/x
  3. Step 3: Cross multiply
    228,865.28x = 343,213.65 × 79,067.12
  4. Step 4: Simplify right side
    228,865.28x = 27,136,914,850.19
  5. Step 5: Solve for x
    x = 27,136,914,850.19/228,865.28
  6. Step 6: Final answer
    x = 118,571.57

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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.