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Finding the Fourth Proportional to 379,653.44, 570,365.88 and 221,992.61

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Solution

The fourth proportional to 379,653.44, 570,365.88 and 221,992.61 is: 333,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,653.44 : 570,365.88 = 221,992.61 : x
  2. Step 2: Convert to fraction form
    379,653.44/570,365.88 = 221,992.61/x
  3. Step 3: Cross multiply
    379,653.44x = 570,365.88 × 221,992.61
  4. Step 4: Simplify right side
    379,653.44x = 126,617,007,504.32
  5. Step 5: Solve for x
    x = 126,617,007,504.32/379,653.44
  6. Step 6: Final answer
    x = 333,506.81

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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.