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Finding the Fourth Proportional to 543,587.46, 815,021.37 and 259,321.92

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Solution

The fourth proportional to 543,587.46, 815,021.37 and 259,321.92 is: 388,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,587.46 : 815,021.37 = 259,321.92 : x
  2. Step 2: Convert to fraction form
    543,587.46/815,021.37 = 259,321.92/x
  3. Step 3: Cross multiply
    543,587.46x = 815,021.37 × 259,321.92
  4. Step 4: Simplify right side
    543,587.46x = 211,352,906,509.43
  5. Step 5: Solve for x
    x = 211,352,906,509.43/543,587.46
  6. Step 6: Final answer
    x = 388,811.23

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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.