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Finding the Fourth Proportional to 256,543.11, 384,871.46 and 88,059.66

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Solution

The fourth proportional to 256,543.11, 384,871.46 and 88,059.66 is: 132,108.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,543.11 : 384,871.46 = 88,059.66 : x
  2. Step 2: Convert to fraction form
    256,543.11/384,871.46 = 88,059.66/x
  3. Step 3: Cross multiply
    256,543.11x = 384,871.46 × 88,059.66
  4. Step 4: Simplify right side
    256,543.11x = 33,891,649,471.01
  5. Step 5: Solve for x
    x = 33,891,649,471.01/256,543.11
  6. Step 6: Final answer
    x = 132,108.98

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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.