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Finding the Fourth Proportional to 143,649.75, 215,474.64 and 38,466.39

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Solution

The fourth proportional to 143,649.75, 215,474.64 and 38,466.39 is: 57,699.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,649.75 : 215,474.64 = 38,466.39 : x
  2. Step 2: Convert to fraction form
    143,649.75/215,474.64 = 38,466.39/x
  3. Step 3: Cross multiply
    143,649.75x = 215,474.64 × 38,466.39
  4. Step 4: Simplify right side
    143,649.75x = 8,288,531,537.35
  5. Step 5: Solve for x
    x = 8,288,531,537.35/143,649.75
  6. Step 6: Final answer
    x = 57,699.59

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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.