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Finding the Fourth Proportional to 366,942.20, 550,413.30 and 252,780.80

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Solution

The fourth proportional to 366,942.20, 550,413.30 and 252,780.80 is: 379,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,942.20 : 550,413.30 = 252,780.80 : x
  2. Step 2: Convert to fraction form
    366,942.20/550,413.30 = 252,780.80/x
  3. Step 3: Cross multiply
    366,942.20x = 550,413.30 × 252,780.80
  4. Step 4: Simplify right side
    366,942.20x = 139,133,914,304.64
  5. Step 5: Solve for x
    x = 139,133,914,304.64/366,942.20
  6. Step 6: Final answer
    x = 379,171.20

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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.