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Finding the Fourth Proportional to 207,907, 311,879.94 and 67,627.96

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Solution

The fourth proportional to 207,907, 311,879.94 and 67,627.96 is: 101,448.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,907 : 311,879.94 = 67,627.96 : x
  2. Step 2: Convert to fraction form
    207,907/311,879.94 = 67,627.96/x
  3. Step 3: Cross multiply
    207,907x = 311,879.94 × 67,627.96
  4. Step 4: Simplify right side
    207,907x = 21,091,804,107.12
  5. Step 5: Solve for x
    x = 21,091,804,107.12/207,907
  6. Step 6: Final answer
    x = 101,448.26

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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.