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Finding the Fourth Proportional to 219,469.70, 329,313.90 and 124,772.60

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Solution

The fourth proportional to 219,469.70, 329,313.90 and 124,772.60 is: 187,221.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,469.70 : 329,313.90 = 124,772.60 : x
  2. Step 2: Convert to fraction form
    219,469.70/329,313.90 = 124,772.60/x
  3. Step 3: Cross multiply
    219,469.70x = 329,313.90 × 124,772.60
  4. Step 4: Simplify right side
    219,469.70x = 41,089,351,519.14
  5. Step 5: Solve for x
    x = 41,089,351,519.14/219,469.70
  6. Step 6: Final answer
    x = 187,221.07

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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.