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Finding the Fourth Proportional to 143,553.82, 215,361.86 and 43,711.40

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Solution

The fourth proportional to 143,553.82, 215,361.86 and 43,711.40 is: 65,576.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,553.82 : 215,361.86 = 43,711.40 : x
  2. Step 2: Convert to fraction form
    143,553.82/215,361.86 = 43,711.40/x
  3. Step 3: Cross multiply
    143,553.82x = 215,361.86 × 43,711.40
  4. Step 4: Simplify right side
    143,553.82x = 9,413,767,884.46
  5. Step 5: Solve for x
    x = 9,413,767,884.46/143,553.82
  6. Step 6: Final answer
    x = 65,576.58

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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.