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Finding the Fourth Proportional to 219,976.56, 330,005.88 and 100,042.20

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Solution

The fourth proportional to 219,976.56, 330,005.88 and 100,042.20 is: 150,081.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,976.56 : 330,005.88 = 100,042.20 : x
  2. Step 2: Convert to fraction form
    219,976.56/330,005.88 = 100,042.20/x
  3. Step 3: Cross multiply
    219,976.56x = 330,005.88 × 100,042.20
  4. Step 4: Simplify right side
    219,976.56x = 33,014,514,248.14
  5. Step 5: Solve for x
    x = 33,014,514,248.14/219,976.56
  6. Step 6: Final answer
    x = 150,081.96

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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.