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Finding the Fourth Proportional to 551,147.70, 826,721.55 and 362,190.90

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Solution

The fourth proportional to 551,147.70, 826,721.55 and 362,190.90 is: 543,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,147.70 : 826,721.55 = 362,190.90 : x
  2. Step 2: Convert to fraction form
    551,147.70/826,721.55 = 362,190.90/x
  3. Step 3: Cross multiply
    551,147.70x = 826,721.55 × 362,190.90
  4. Step 4: Simplify right side
    551,147.70x = 299,431,022,243.90
  5. Step 5: Solve for x
    x = 299,431,022,243.90/551,147.70
  6. Step 6: Final answer
    x = 543,286.35

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Similar ratio
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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.