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Finding the Fourth Proportional to 486,257.87, 729,329.38 and 131,299.58

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Solution

The fourth proportional to 486,257.87, 729,329.38 and 131,299.58 is: 196,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,257.87 : 729,329.38 = 131,299.58 : x
  2. Step 2: Convert to fraction form
    486,257.87/729,329.38 = 131,299.58/x
  3. Step 3: Cross multiply
    486,257.87x = 729,329.38 × 131,299.58
  4. Step 4: Simplify right side
    486,257.87x = 95,760,641,275.66
  5. Step 5: Solve for x
    x = 95,760,641,275.66/486,257.87
  6. Step 6: Final answer
    x = 196,933.86

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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.