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Finding the Fourth Proportional to 219,383.20, 328,977.60 and 101,090.80

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Solution

The fourth proportional to 219,383.20, 328,977.60 and 101,090.80 is: 151,591.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,383.20 : 328,977.60 = 101,090.80 : x
  2. Step 2: Convert to fraction form
    219,383.20/328,977.60 = 101,090.80/x
  3. Step 3: Cross multiply
    219,383.20x = 328,977.60 × 101,090.80
  4. Step 4: Simplify right side
    219,383.20x = 33,256,608,766.08
  5. Step 5: Solve for x
    x = 33,256,608,766.08/219,383.20
  6. Step 6: Final answer
    x = 151,591.41

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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.