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Finding the Fourth Proportional to 543,729.05, 815,144.56 and 239,906.91

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Solution

The fourth proportional to 543,729.05, 815,144.56 and 239,906.91 is: 359,662.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,729.05 : 815,144.56 = 239,906.91 : x
  2. Step 2: Convert to fraction form
    543,729.05/815,144.56 = 239,906.91/x
  3. Step 3: Cross multiply
    543,729.05x = 815,144.56 × 239,906.91
  4. Step 4: Simplify right side
    543,729.05x = 195,558,816,399.41
  5. Step 5: Solve for x
    x = 195,558,816,399.41/543,729.05
  6. Step 6: Final answer
    x = 359,662.25

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1.5x scale

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.