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Finding the Fourth Proportional to 219,912.61, 303,479.99 and 119,310.61

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Solution

The fourth proportional to 219,912.61, 303,479.99 and 119,310.61 is: 164,648.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,912.61 : 303,479.99 = 119,310.61 : x
  2. Step 2: Convert to fraction form
    219,912.61/303,479.99 = 119,310.61/x
  3. Step 3: Cross multiply
    219,912.61x = 303,479.99 × 119,310.61
  4. Step 4: Simplify right side
    219,912.61x = 36,208,382,729.69
  5. Step 5: Solve for x
    x = 36,208,382,729.69/219,912.61
  6. Step 6: Final answer
    x = 164,648.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.