Home / 258,863.83-388,137.18-100,907.75

Finding the Fourth Proportional to 258,863.83, 388,137.18 and 100,907.75

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Solution

The fourth proportional to 258,863.83, 388,137.18 and 100,907.75 is: 151,299.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,863.83 : 388,137.18 = 100,907.75 : x
  2. Step 2: Convert to fraction form
    258,863.83/388,137.18 = 100,907.75/x
  3. Step 3: Cross multiply
    258,863.83x = 388,137.18 × 100,907.75
  4. Step 4: Simplify right side
    258,863.83x = 39,166,049,525.15
  5. Step 5: Solve for x
    x = 39,166,049,525.15/258,863.83
  6. Step 6: Final answer
    x = 151,299.81

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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.