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Finding the Fourth Proportional to 445,785.11, 668,675.31 and 108,827.54

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Solution

The fourth proportional to 445,785.11, 668,675.31 and 108,827.54 is: 163,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,785.11 : 668,675.31 = 108,827.54 : x
  2. Step 2: Convert to fraction form
    445,785.11/668,675.31 = 108,827.54/x
  3. Step 3: Cross multiply
    445,785.11x = 668,675.31 × 108,827.54
  4. Step 4: Simplify right side
    445,785.11x = 72,770,285,702.66
  5. Step 5: Solve for x
    x = 72,770,285,702.66/445,785.11
  6. Step 6: Final answer
    x = 163,240.73

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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.