Home / 388,984.24-582,535.80-321,930.80

Finding the Fourth Proportional to 388,984.24, 582,535.80 and 321,930.80

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Solution

The fourth proportional to 388,984.24, 582,535.80 and 321,930.80 is: 482,117.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,984.24 : 582,535.80 = 321,930.80 : x
  2. Step 2: Convert to fraction form
    388,984.24/582,535.80 = 321,930.80/x
  3. Step 3: Cross multiply
    388,984.24x = 582,535.80 × 321,930.80
  4. Step 4: Simplify right side
    388,984.24x = 187,536,216,122.64
  5. Step 5: Solve for x
    x = 187,536,216,122.64/388,984.24
  6. Step 6: Final answer
    x = 482,117.77

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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.