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Finding the Fourth Proportional to 481,786.70, 722,388.45 and 215,497.58

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Solution

The fourth proportional to 481,786.70, 722,388.45 and 215,497.58 is: 323,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,786.70 : 722,388.45 = 215,497.58 : x
  2. Step 2: Convert to fraction form
    481,786.70/722,388.45 = 215,497.58/x
  3. Step 3: Cross multiply
    481,786.70x = 722,388.45 × 215,497.58
  4. Step 4: Simplify right side
    481,786.70x = 155,672,962,794.95
  5. Step 5: Solve for x
    x = 155,672,962,794.95/481,786.70
  6. Step 6: Final answer
    x = 323,115.94

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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.