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Finding the Fourth Proportional to 325,413.78, 449,057.89 and 189,451.63

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Solution

The fourth proportional to 325,413.78, 449,057.89 and 189,451.63 is: 261,435.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,413.78 : 449,057.89 = 189,451.63 : x
  2. Step 2: Convert to fraction form
    325,413.78/449,057.89 = 189,451.63/x
  3. Step 3: Cross multiply
    325,413.78x = 449,057.89 × 189,451.63
  4. Step 4: Simplify right side
    325,413.78x = 85,074,748,277.60
  5. Step 5: Solve for x
    x = 85,074,748,277.60/325,413.78
  6. Step 6: Final answer
    x = 261,435.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.