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Finding the Fourth Proportional to 551,989.69, 827,984.53 and 178,012.69

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Solution

The fourth proportional to 551,989.69, 827,984.53 and 178,012.69 is: 267,019.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,989.69 : 827,984.53 = 178,012.69 : x
  2. Step 2: Convert to fraction form
    551,989.69/827,984.53 = 178,012.69/x
  3. Step 3: Cross multiply
    551,989.69x = 827,984.53 × 178,012.69
  4. Step 4: Simplify right side
    551,989.69x = 147,391,751,616.24
  5. Step 5: Solve for x
    x = 147,391,751,616.24/551,989.69
  6. Step 6: Final answer
    x = 267,019.03

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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.