Home / 388,936.40-582,238.20-231,083.60

Finding the Fourth Proportional to 388,936.40, 582,238.20 and 231,083.60

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Solution

The fourth proportional to 388,936.40, 582,238.20 and 231,083.60 is: 345,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,936.40 : 582,238.20 = 231,083.60 : x
  2. Step 2: Convert to fraction form
    388,936.40/582,238.20 = 231,083.60/x
  3. Step 3: Cross multiply
    388,936.40x = 582,238.20 × 231,083.60
  4. Step 4: Simplify right side
    388,936.40x = 134,545,699,313.52
  5. Step 5: Solve for x
    x = 134,545,699,313.52/388,936.40
  6. Step 6: Final answer
    x = 345,932.39

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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.