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Finding the Fourth Proportional to 263,940.83, 395,910.79 and 74,400.83

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Solution

The fourth proportional to 263,940.83, 395,910.79 and 74,400.83 is: 111,601.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,940.83 : 395,910.79 = 74,400.83 : x
  2. Step 2: Convert to fraction form
    263,940.83/395,910.79 = 74,400.83/x
  3. Step 3: Cross multiply
    263,940.83x = 395,910.79 × 74,400.83
  4. Step 4: Simplify right side
    263,940.83x = 29,456,090,701.07
  5. Step 5: Solve for x
    x = 29,456,090,701.07/263,940.83
  6. Step 6: Final answer
    x = 111,601.11

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1.5x scale

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.