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Finding the Fourth Proportional to 320,511.44, 480,589.66 and 131,104.82

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Solution

The fourth proportional to 320,511.44, 480,589.66 and 131,104.82 is: 196,584.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,511.44 : 480,589.66 = 131,104.82 : x
  2. Step 2: Convert to fraction form
    320,511.44/480,589.66 = 131,104.82/x
  3. Step 3: Cross multiply
    320,511.44x = 480,589.66 × 131,104.82
  4. Step 4: Simplify right side
    320,511.44x = 63,007,620,868.16
  5. Step 5: Solve for x
    x = 63,007,620,868.16/320,511.44
  6. Step 6: Final answer
    x = 196,584.62

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1.5x scale

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.