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Finding the Fourth Proportional to 481,860.54, 664,949.61 and 277,920

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Solution

The fourth proportional to 481,860.54, 664,949.61 and 277,920 is: 383,519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,860.54 : 664,949.61 = 277,920 : x
  2. Step 2: Convert to fraction form
    481,860.54/664,949.61 = 277,920/x
  3. Step 3: Cross multiply
    481,860.54x = 664,949.61 × 277,920
  4. Step 4: Simplify right side
    481,860.54x = 184,802,795,611.20
  5. Step 5: Solve for x
    x = 184,802,795,611.20/481,860.54
  6. Step 6: Final answer
    x = 383,519.26

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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.