Home / 258,795.47-388,198.37-69,255.54

Finding the Fourth Proportional to 258,795.47, 388,198.37 and 69,255.54

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Solution

The fourth proportional to 258,795.47, 388,198.37 and 69,255.54 is: 103,884.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,795.47 : 388,198.37 = 69,255.54 : x
  2. Step 2: Convert to fraction form
    258,795.47/388,198.37 = 69,255.54/x
  3. Step 3: Cross multiply
    258,795.47x = 388,198.37 × 69,255.54
  4. Step 4: Simplify right side
    258,795.47x = 26,884,887,914.61
  5. Step 5: Solve for x
    x = 26,884,887,914.61/258,795.47
  6. Step 6: Final answer
    x = 103,884.69

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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.