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Finding the Fourth Proportional to 656,212, 984,413.04 and 206,780.80

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Solution

The fourth proportional to 656,212, 984,413.04 and 206,780.80 is: 310,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,212 : 984,413.04 = 206,780.80 : x
  2. Step 2: Convert to fraction form
    656,212/984,413.04 = 206,780.80/x
  3. Step 3: Cross multiply
    656,212x = 984,413.04 × 206,780.80
  4. Step 4: Simplify right side
    656,212x = 203,557,715,941.63
  5. Step 5: Solve for x
    x = 203,557,715,941.63/656,212
  6. Step 6: Final answer
    x = 310,201.15

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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.