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Finding the Fourth Proportional to 395,227.11, 545,413.73 and 213,938.48

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Solution

The fourth proportional to 395,227.11, 545,413.73 and 213,938.48 is: 295,235.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,227.11 : 545,413.73 = 213,938.48 : x
  2. Step 2: Convert to fraction form
    395,227.11/545,413.73 = 213,938.48/x
  3. Step 3: Cross multiply
    395,227.11x = 545,413.73 × 213,938.48
  4. Step 4: Simplify right side
    395,227.11x = 116,684,984,367.33
  5. Step 5: Solve for x
    x = 116,684,984,367.33/395,227.11
  6. Step 6: Final answer
    x = 295,235.27

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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.