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Finding the Fourth Proportional to 220,810.70, 331,325.40 and 126,113.60

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Solution

The fourth proportional to 220,810.70, 331,325.40 and 126,113.60 is: 189,232.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,810.70 : 331,325.40 = 126,113.60 : x
  2. Step 2: Convert to fraction form
    220,810.70/331,325.40 = 126,113.60/x
  3. Step 3: Cross multiply
    220,810.70x = 331,325.40 × 126,113.60
  4. Step 4: Simplify right side
    220,810.70x = 41,784,638,965.44
  5. Step 5: Solve for x
    x = 41,784,638,965.44/220,810.70
  6. Step 6: Final answer
    x = 189,232.85

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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.