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Finding the Fourth Proportional to 551,990.69, 827,986.03 and 178,013.69

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Solution

The fourth proportional to 551,990.69, 827,986.03 and 178,013.69 is: 267,020.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,990.69 : 827,986.03 = 178,013.69 : x
  2. Step 2: Convert to fraction form
    551,990.69/827,986.03 = 178,013.69/x
  3. Step 3: Cross multiply
    551,990.69x = 827,986.03 × 178,013.69
  4. Step 4: Simplify right side
    551,990.69x = 147,392,848,468.75
  5. Step 5: Solve for x
    x = 147,392,848,468.75/551,990.69
  6. Step 6: Final answer
    x = 267,020.53

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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.