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Finding the Fourth Proportional to 330,889.81, 496,287.85 and 106,220.66

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Solution

The fourth proportional to 330,889.81, 496,287.85 and 106,220.66 is: 159,315.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,889.81 : 496,287.85 = 106,220.66 : x
  2. Step 2: Convert to fraction form
    330,889.81/496,287.85 = 106,220.66/x
  3. Step 3: Cross multiply
    330,889.81x = 496,287.85 × 106,220.66
  4. Step 4: Simplify right side
    330,889.81x = 52,716,022,976.98
  5. Step 5: Solve for x
    x = 52,716,022,976.98/330,889.81
  6. Step 6: Final answer
    x = 159,315.95

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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.