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Finding the Fourth Proportional to 543,496.20, 815,438.70 and 228,049.80

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Solution

The fourth proportional to 543,496.20, 815,438.70 and 228,049.80 is: 342,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,496.20 : 815,438.70 = 228,049.80 : x
  2. Step 2: Convert to fraction form
    543,496.20/815,438.70 = 228,049.80/x
  3. Step 3: Cross multiply
    543,496.20x = 815,438.70 × 228,049.80
  4. Step 4: Simplify right side
    543,496.20x = 185,960,632,447.26
  5. Step 5: Solve for x
    x = 185,960,632,447.26/543,496.20
  6. Step 6: Final answer
    x = 342,156.27

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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.