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Finding the Fourth Proportional to 290,757.79, 435,958.08 and 113,057.66

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Solution

The fourth proportional to 290,757.79, 435,958.08 and 113,057.66 is: 169,517.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,757.79 : 435,958.08 = 113,057.66 : x
  2. Step 2: Convert to fraction form
    290,757.79/435,958.08 = 113,057.66/x
  3. Step 3: Cross multiply
    290,757.79x = 435,958.08 × 113,057.66
  4. Step 4: Simplify right side
    290,757.79x = 49,288,399,413.98
  5. Step 5: Solve for x
    x = 49,288,399,413.98/290,757.79
  6. Step 6: Final answer
    x = 169,517.04

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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.