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Finding the Fourth Proportional to 481,336.87, 664,219.62 and 263,503.78

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Solution

The fourth proportional to 481,336.87, 664,219.62 and 263,503.78 is: 363,621.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,336.87 : 664,219.62 = 263,503.78 : x
  2. Step 2: Convert to fraction form
    481,336.87/664,219.62 = 263,503.78/x
  3. Step 3: Cross multiply
    481,336.87x = 664,219.62 × 263,503.78
  4. Step 4: Simplify right side
    481,336.87x = 175,024,380,620.16
  5. Step 5: Solve for x
    x = 175,024,380,620.16/481,336.87
  6. Step 6: Final answer
    x = 363,621.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.