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Finding the Fourth Proportional to 171,201.44, 256,436.40 and 139,035.54

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Solution

The fourth proportional to 171,201.44, 256,436.40 and 139,035.54 is: 208,256.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,201.44 : 256,436.40 = 139,035.54 : x
  2. Step 2: Convert to fraction form
    171,201.44/256,436.40 = 139,035.54/x
  3. Step 3: Cross multiply
    171,201.44x = 256,436.40 × 139,035.54
  4. Step 4: Simplify right side
    171,201.44x = 35,653,773,349.66
  5. Step 5: Solve for x
    x = 35,653,773,349.66/171,201.44
  6. Step 6: Final answer
    x = 208,256.27

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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.