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Finding the Fourth Proportional to 388,950.20, 582,503.70 and 263,612.60

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Solution

The fourth proportional to 388,950.20, 582,503.70 and 263,612.60 is: 394,794.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,950.20 : 582,503.70 = 263,612.60 : x
  2. Step 2: Convert to fraction form
    388,950.20/582,503.70 = 263,612.60/x
  3. Step 3: Cross multiply
    388,950.20x = 582,503.70 × 263,612.60
  4. Step 4: Simplify right side
    388,950.20x = 153,555,314,866.62
  5. Step 5: Solve for x
    x = 153,555,314,866.62/388,950.20
  6. Step 6: Final answer
    x = 394,794.28

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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.