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Finding the Fourth Proportional to 256,912.86, 385,273.44 and 88,385.52

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Solution

The fourth proportional to 256,912.86, 385,273.44 and 88,385.52 is: 132,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,912.86 : 385,273.44 = 88,385.52 : x
  2. Step 2: Convert to fraction form
    256,912.86/385,273.44 = 88,385.52/x
  3. Step 3: Cross multiply
    256,912.86x = 385,273.44 × 88,385.52
  4. Step 4: Simplify right side
    256,912.86x = 34,052,593,336.59
  5. Step 5: Solve for x
    x = 34,052,593,336.59/256,912.86
  6. Step 6: Final answer
    x = 132,545.30

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1.5x scale

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.