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Finding the Fourth Proportional to 543,995.48, 816,156.18 and 219,616.55

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Solution

The fourth proportional to 543,995.48, 816,156.18 and 219,616.55 is: 329,490.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,995.48 : 816,156.18 = 219,616.55 : x
  2. Step 2: Convert to fraction form
    543,995.48/816,156.18 = 219,616.55/x
  3. Step 3: Cross multiply
    543,995.48x = 816,156.18 × 219,616.55
  4. Step 4: Simplify right side
    543,995.48x = 179,241,404,512.78
  5. Step 5: Solve for x
    x = 179,241,404,512.78/543,995.48
  6. Step 6: Final answer
    x = 329,490.61

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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.