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Finding the Fourth Proportional to 643,577.50, 965,229.56 and 244,078.21

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Solution

The fourth proportional to 643,577.50, 965,229.56 and 244,078.21 is: 366,065.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,577.50 : 965,229.56 = 244,078.21 : x
  2. Step 2: Convert to fraction form
    643,577.50/965,229.56 = 244,078.21/x
  3. Step 3: Cross multiply
    643,577.50x = 965,229.56 × 244,078.21
  4. Step 4: Simplify right side
    643,577.50x = 235,591,505,518.27
  5. Step 5: Solve for x
    x = 235,591,505,518.27/643,577.50
  6. Step 6: Final answer
    x = 366,065.48

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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.