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Finding the Fourth Proportional to 319,620.60, 479,093.88 and 106,331.54

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Solution

The fourth proportional to 319,620.60, 479,093.88 and 106,331.54 is: 159,385.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,620.60 : 479,093.88 = 106,331.54 : x
  2. Step 2: Convert to fraction form
    319,620.60/479,093.88 = 106,331.54/x
  3. Step 3: Cross multiply
    319,620.60x = 479,093.88 × 106,331.54
  4. Step 4: Simplify right side
    319,620.60x = 50,942,790,064.98
  5. Step 5: Solve for x
    x = 50,942,790,064.98/319,620.60
  6. Step 6: Final answer
    x = 159,385.19

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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.