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Finding the Fourth Proportional to 386,818.89, 580,235.52 and 134,107.62

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Solution

The fourth proportional to 386,818.89, 580,235.52 and 134,107.62 is: 201,163.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,818.89 : 580,235.52 = 134,107.62 : x
  2. Step 2: Convert to fraction form
    386,818.89/580,235.52 = 134,107.62/x
  3. Step 3: Cross multiply
    386,818.89x = 580,235.52 × 134,107.62
  4. Step 4: Simplify right side
    386,818.89x = 77,814,004,626.66
  5. Step 5: Solve for x
    x = 77,814,004,626.66/386,818.89
  6. Step 6: Final answer
    x = 201,163.92

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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.