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Finding the Fourth Proportional to 143,457.46, 215,198.24 and 43,618.52

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Solution

The fourth proportional to 143,457.46, 215,198.24 and 43,618.52 is: 65,431.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,457.46 : 215,198.24 = 43,618.52 : x
  2. Step 2: Convert to fraction form
    143,457.46/215,198.24 = 43,618.52/x
  3. Step 3: Cross multiply
    143,457.46x = 215,198.24 × 43,618.52
  4. Step 4: Simplify right side
    143,457.46x = 9,386,629,218.88
  5. Step 5: Solve for x
    x = 9,386,629,218.88/143,457.46
  6. Step 6: Final answer
    x = 65,431.45

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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.