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Finding the Fourth Proportional to 247,383.20, 371,015.40 and 69,906.80

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Solution

The fourth proportional to 247,383.20, 371,015.40 and 69,906.80 is: 104,843.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,383.20 : 371,015.40 = 69,906.80 : x
  2. Step 2: Convert to fraction form
    247,383.20/371,015.40 = 69,906.80/x
  3. Step 3: Cross multiply
    247,383.20x = 371,015.40 × 69,906.80
  4. Step 4: Simplify right side
    247,383.20x = 25,936,499,364.72
  5. Step 5: Solve for x
    x = 25,936,499,364.72/247,383.20
  6. Step 6: Final answer
    x = 104,843.41

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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.