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Finding the Fourth Proportional to 228,556.62, 315,408.96 and 126,579.78

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Solution

The fourth proportional to 228,556.62, 315,408.96 and 126,579.78 is: 174,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,556.62 : 315,408.96 = 126,579.78 : x
  2. Step 2: Convert to fraction form
    228,556.62/315,408.96 = 126,579.78/x
  3. Step 3: Cross multiply
    228,556.62x = 315,408.96 × 126,579.78
  4. Step 4: Simplify right side
    228,556.62x = 39,924,396,766.83
  5. Step 5: Solve for x
    x = 39,924,396,766.83/228,556.62
  6. Step 6: Final answer
    x = 174,680.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.