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Finding the Fourth Proportional to 219,382.20, 328,976.10 and 101,089.80

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Solution

The fourth proportional to 219,382.20, 328,976.10 and 101,089.80 is: 151,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,382.20 : 328,976.10 = 101,089.80 : x
  2. Step 2: Convert to fraction form
    219,382.20/328,976.10 = 101,089.80/x
  3. Step 3: Cross multiply
    219,382.20x = 328,976.10 × 101,089.80
  4. Step 4: Simplify right side
    219,382.20x = 33,256,128,153.78
  5. Step 5: Solve for x
    x = 33,256,128,153.78/219,382.20
  6. Step 6: Final answer
    x = 151,589.91

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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.