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Finding the Fourth Proportional to 220,559.40, 330,839.10 and 115,410.60

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Solution

The fourth proportional to 220,559.40, 330,839.10 and 115,410.60 is: 173,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,559.40 : 330,839.10 = 115,410.60 : x
  2. Step 2: Convert to fraction form
    220,559.40/330,839.10 = 115,410.60/x
  3. Step 3: Cross multiply
    220,559.40x = 330,839.10 × 115,410.60
  4. Step 4: Simplify right side
    220,559.40x = 38,182,339,034.46
  5. Step 5: Solve for x
    x = 38,182,339,034.46/220,559.40
  6. Step 6: Final answer
    x = 173,115.90

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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.