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Finding the Fourth Proportional to 228,736.08, 343,129.41 and 78,959.39

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Solution

The fourth proportional to 228,736.08, 343,129.41 and 78,959.39 is: 118,447.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,736.08 : 343,129.41 = 78,959.39 : x
  2. Step 2: Convert to fraction form
    228,736.08/343,129.41 = 78,959.39/x
  3. Step 3: Cross multiply
    228,736.08x = 343,129.41 × 78,959.39
  4. Step 4: Simplify right side
    228,736.08x = 27,093,287,189.01
  5. Step 5: Solve for x
    x = 27,093,287,189.01/228,736.08
  6. Step 6: Final answer
    x = 118,447.81

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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.