Home / 219,212.20-328,721.10-100,822.60

Finding the Fourth Proportional to 219,212.20, 328,721.10 and 100,822.60

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Solution

The fourth proportional to 219,212.20, 328,721.10 and 100,822.60 is: 151,189.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,212.20 : 328,721.10 = 100,822.60 : x
  2. Step 2: Convert to fraction form
    219,212.20/328,721.10 = 100,822.60/x
  3. Step 3: Cross multiply
    219,212.20x = 328,721.10 × 100,822.60
  4. Step 4: Simplify right side
    219,212.20x = 33,142,515,976.86
  5. Step 5: Solve for x
    x = 33,142,515,976.86/219,212.20
  6. Step 6: Final answer
    x = 151,189.19

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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.