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Finding the Fourth Proportional to 388,963.20, 582,523.20 and 263,625.60

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Solution

The fourth proportional to 388,963.20, 582,523.20 and 263,625.60 is: 394,813.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,963.20 : 582,523.20 = 263,625.60 : x
  2. Step 2: Convert to fraction form
    388,963.20/582,523.20 = 263,625.60/x
  3. Step 3: Cross multiply
    388,963.20x = 582,523.20 × 263,625.60
  4. Step 4: Simplify right side
    388,963.20x = 153,568,028,113.92
  5. Step 5: Solve for x
    x = 153,568,028,113.92/388,963.20
  6. Step 6: Final answer
    x = 394,813.77

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1.5x scale

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.