Home / 388,922.40-582,217.20-231,069.60

Finding the Fourth Proportional to 388,922.40, 582,217.20 and 231,069.60

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Solution

The fourth proportional to 388,922.40, 582,217.20 and 231,069.60 is: 345,911.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,922.40 : 582,217.20 = 231,069.60 : x
  2. Step 2: Convert to fraction form
    388,922.40/582,217.20 = 231,069.60/x
  3. Step 3: Cross multiply
    388,922.40x = 582,217.20 × 231,069.60
  4. Step 4: Simplify right side
    388,922.40x = 134,532,695,517.12
  5. Step 5: Solve for x
    x = 134,532,695,517.12/388,922.40
  6. Step 6: Final answer
    x = 345,911.41

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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.