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Finding the Fourth Proportional to 543,618.70, 815,816.85 and 228,301.90

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Solution

The fourth proportional to 543,618.70, 815,816.85 and 228,301.90 is: 342,616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,618.70 : 815,816.85 = 228,301.90 : x
  2. Step 2: Convert to fraction form
    543,618.70/815,816.85 = 228,301.90/x
  3. Step 3: Cross multiply
    543,618.70x = 815,816.85 × 228,301.90
  4. Step 4: Simplify right side
    543,618.70x = 186,252,536,907.02
  5. Step 5: Solve for x
    x = 186,252,536,907.02/543,618.70
  6. Step 6: Final answer
    x = 342,616.13

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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.