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Finding the Fourth Proportional to 220,606.40, 330,715.20 and 131,765.60

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Solution

The fourth proportional to 220,606.40, 330,715.20 and 131,765.60 is: 197,532.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,606.40 : 330,715.20 = 131,765.60 : x
  2. Step 2: Convert to fraction form
    220,606.40/330,715.20 = 131,765.60/x
  3. Step 3: Cross multiply
    220,606.40x = 330,715.20 × 131,765.60
  4. Step 4: Simplify right side
    220,606.40x = 43,576,886,757.12
  5. Step 5: Solve for x
    x = 43,576,886,757.12/220,606.40
  6. Step 6: Final answer
    x = 197,532.29

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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.