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Finding the Fourth Proportional to 247,321.78, 371,041.15 and 196,911.42

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Solution

The fourth proportional to 247,321.78, 371,041.15 and 196,911.42 is: 295,413.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,321.78 : 371,041.15 = 196,911.42 : x
  2. Step 2: Convert to fraction form
    247,321.78/371,041.15 = 196,911.42/x
  3. Step 3: Cross multiply
    247,321.78x = 371,041.15 × 196,911.42
  4. Step 4: Simplify right side
    247,321.78x = 73,062,239,724.93
  5. Step 5: Solve for x
    x = 73,062,239,724.93/247,321.78
  6. Step 6: Final answer
    x = 295,413.69

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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.