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Finding the Fourth Proportional to 171,174.56, 256,664.64 and 143,268.44

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Solution

The fourth proportional to 171,174.56, 256,664.64 and 143,268.44 is: 214,821.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,174.56 : 256,664.64 = 143,268.44 : x
  2. Step 2: Convert to fraction form
    171,174.56/256,664.64 = 143,268.44/x
  3. Step 3: Cross multiply
    171,174.56x = 256,664.64 × 143,268.44
  4. Step 4: Simplify right side
    171,174.56x = 36,771,942,575.96
  5. Step 5: Solve for x
    x = 36,771,942,575.96/171,174.56
  6. Step 6: Final answer
    x = 214,821.31

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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.