Home / 258,887.25-388,470.39-109,231.26

Finding the Fourth Proportional to 258,887.25, 388,470.39 and 109,231.26

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Solution

The fourth proportional to 258,887.25, 388,470.39 and 109,231.26 is: 163,905.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,887.25 : 388,470.39 = 109,231.26 : x
  2. Step 2: Convert to fraction form
    258,887.25/388,470.39 = 109,231.26/x
  3. Step 3: Cross multiply
    258,887.25x = 388,470.39 × 109,231.26
  4. Step 4: Simplify right side
    258,887.25x = 42,433,110,172.39
  5. Step 5: Solve for x
    x = 42,433,110,172.39/258,887.25
  6. Step 6: Final answer
    x = 163,905.76

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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.