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Finding the Fourth Proportional to 258,910.92, 388,356.66 and 107,103.96

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Solution

The fourth proportional to 258,910.92, 388,356.66 and 107,103.96 is: 160,651.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,910.92 : 388,356.66 = 107,103.96 : x
  2. Step 2: Convert to fraction form
    258,910.92/388,356.66 = 107,103.96/x
  3. Step 3: Cross multiply
    258,910.92x = 388,356.66 × 107,103.96
  4. Step 4: Simplify right side
    258,910.92x = 41,594,536,178.37
  5. Step 5: Solve for x
    x = 41,594,536,178.37/258,910.92
  6. Step 6: Final answer
    x = 160,651.92

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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.