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Finding the Fourth Proportional to 219,629.20, 329,346.60 and 101,239.60

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Solution

The fourth proportional to 219,629.20, 329,346.60 and 101,239.60 is: 151,814.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,629.20 : 329,346.60 = 101,239.60 : x
  2. Step 2: Convert to fraction form
    219,629.20/329,346.60 = 101,239.60/x
  3. Step 3: Cross multiply
    219,629.20x = 329,346.60 × 101,239.60
  4. Step 4: Simplify right side
    219,629.20x = 33,342,918,045.36
  5. Step 5: Solve for x
    x = 33,342,918,045.36/219,629.20
  6. Step 6: Final answer
    x = 151,814.59

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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.