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Finding the Fourth Proportional to 219,413.53, 329,086.59 and 69,634.36

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Solution

The fourth proportional to 219,413.53, 329,086.59 and 69,634.36 is: 104,440.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,413.53 : 329,086.59 = 69,634.36 : x
  2. Step 2: Convert to fraction form
    219,413.53/329,086.59 = 69,634.36/x
  3. Step 3: Cross multiply
    219,413.53x = 329,086.59 × 69,634.36
  4. Step 4: Simplify right side
    219,413.53x = 22,915,734,079.23
  5. Step 5: Solve for x
    x = 22,915,734,079.23/219,413.53
  6. Step 6: Final answer
    x = 104,440.84

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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.