Home / 543,621.36-815,072.13-259,355.78

Finding the Fourth Proportional to 543,621.36, 815,072.13 and 259,355.78

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Solution

The fourth proportional to 543,621.36, 815,072.13 and 259,355.78 is: 388,861.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,621.36 : 815,072.13 = 259,355.78 : x
  2. Step 2: Convert to fraction form
    543,621.36/815,072.13 = 259,355.78/x
  3. Step 3: Cross multiply
    543,621.36x = 815,072.13 × 259,355.78
  4. Step 4: Simplify right side
    543,621.36x = 211,393,663,957.05
  5. Step 5: Solve for x
    x = 211,393,663,957.05/543,621.36
  6. Step 6: Final answer
    x = 388,861.95

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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.