Home / 220,801.20-331,039.80-87,615.60

Finding the Fourth Proportional to 220,801.20, 331,039.80 and 87,615.60

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Solution

The fourth proportional to 220,801.20, 331,039.80 and 87,615.60 is: 131,359.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,801.20 : 331,039.80 = 87,615.60 : x
  2. Step 2: Convert to fraction form
    220,801.20/331,039.80 = 87,615.60/x
  3. Step 3: Cross multiply
    220,801.20x = 331,039.80 × 87,615.60
  4. Step 4: Simplify right side
    220,801.20x = 29,004,250,700.88
  5. Step 5: Solve for x
    x = 29,004,250,700.88/220,801.20
  6. Step 6: Final answer
    x = 131,359.12

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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.