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Finding the Fourth Proportional to 551,406.72, 827,220.78 and 251,806.86

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Solution

The fourth proportional to 551,406.72, 827,220.78 and 251,806.86 is: 377,760.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,406.72 : 827,220.78 = 251,806.86 : x
  2. Step 2: Convert to fraction form
    551,406.72/827,220.78 = 251,806.86/x
  3. Step 3: Cross multiply
    551,406.72x = 827,220.78 × 251,806.86
  4. Step 4: Simplify right side
    551,406.72x = 208,299,867,138.55
  5. Step 5: Solve for x
    x = 208,299,867,138.55/551,406.72
  6. Step 6: Final answer
    x = 377,760.84

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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.