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Finding the Fourth Proportional to 256,649.34, 384,878.13 and 88,121.82

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Solution

The fourth proportional to 256,649.34, 384,878.13 and 88,121.82 is: 132,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,649.34 : 384,878.13 = 88,121.82 : x
  2. Step 2: Convert to fraction form
    256,649.34/384,878.13 = 88,121.82/x
  3. Step 3: Cross multiply
    256,649.34x = 384,878.13 × 88,121.82
  4. Step 4: Simplify right side
    256,649.34x = 33,916,161,293.80
  5. Step 5: Solve for x
    x = 33,916,161,293.80/256,649.34
  6. Step 6: Final answer
    x = 132,149.81

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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.