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Finding the Fourth Proportional to 143,336.20, 215,028.60 and 43,495.60

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Solution

The fourth proportional to 143,336.20, 215,028.60 and 43,495.60 is: 65,250.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,336.20 : 215,028.60 = 43,495.60 : x
  2. Step 2: Convert to fraction form
    143,336.20/215,028.60 = 43,495.60/x
  3. Step 3: Cross multiply
    143,336.20x = 215,028.60 × 43,495.60
  4. Step 4: Simplify right side
    143,336.20x = 9,352,797,974.16
  5. Step 5: Solve for x
    x = 9,352,797,974.16/143,336.20
  6. Step 6: Final answer
    x = 65,250.77

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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.