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Finding the Fourth Proportional to 264,685.44, 396,986.34 and 219,993.72

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Solution

The fourth proportional to 264,685.44, 396,986.34 and 219,993.72 is: 329,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,685.44 : 396,986.34 = 219,993.72 : x
  2. Step 2: Convert to fraction form
    264,685.44/396,986.34 = 219,993.72/x
  3. Step 3: Cross multiply
    264,685.44x = 396,986.34 × 219,993.72
  4. Step 4: Simplify right side
    264,685.44x = 87,334,501,725.78
  5. Step 5: Solve for x
    x = 87,334,501,725.78/264,685.44
  6. Step 6: Final answer
    x = 329,955.82

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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.