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Finding the Fourth Proportional to 543,630.20, 815,639.70 and 228,183.80

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Solution

The fourth proportional to 543,630.20, 815,639.70 and 228,183.80 is: 342,357.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,630.20 : 815,639.70 = 228,183.80 : x
  2. Step 2: Convert to fraction form
    543,630.20/815,639.70 = 228,183.80/x
  3. Step 3: Cross multiply
    543,630.20x = 815,639.70 × 228,183.80
  4. Step 4: Simplify right side
    543,630.20x = 186,115,766,176.86
  5. Step 5: Solve for x
    x = 186,115,766,176.86/543,630.20
  6. Step 6: Final answer
    x = 342,357.30

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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.