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Finding the Fourth Proportional to 269,687.68, 405,056.48 and 219,804.64

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Solution

The fourth proportional to 269,687.68, 405,056.48 and 219,804.64 is: 330,134.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,687.68 : 405,056.48 = 219,804.64 : x
  2. Step 2: Convert to fraction form
    269,687.68/405,056.48 = 219,804.64/x
  3. Step 3: Cross multiply
    269,687.68x = 405,056.48 × 219,804.64
  4. Step 4: Simplify right side
    269,687.68x = 89,033,293,766.07
  5. Step 5: Solve for x
    x = 89,033,293,766.07/269,687.68
  6. Step 6: Final answer
    x = 330,134.82

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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.