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Finding the Fourth Proportional to 256,910.86, 385,270.44 and 88,383.52

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Solution

The fourth proportional to 256,910.86, 385,270.44 and 88,383.52 is: 132,542.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,910.86 : 385,270.44 = 88,383.52 : x
  2. Step 2: Convert to fraction form
    256,910.86/385,270.44 = 88,383.52/x
  3. Step 3: Cross multiply
    256,910.86x = 385,270.44 × 88,383.52
  4. Step 4: Simplify right side
    256,910.86x = 34,051,557,639.15
  5. Step 5: Solve for x
    x = 34,051,557,639.15/256,910.86
  6. Step 6: Final answer
    x = 132,542.31

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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.