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Finding the Fourth Proportional to 256,502.08, 384,753.22 and 66,961.92

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Solution

The fourth proportional to 256,502.08, 384,753.22 and 66,961.92 is: 100,442.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,502.08 : 384,753.22 = 66,961.92 : x
  2. Step 2: Convert to fraction form
    256,502.08/384,753.22 = 66,961.92/x
  3. Step 3: Cross multiply
    256,502.08x = 384,753.22 × 66,961.92
  4. Step 4: Simplify right side
    256,502.08x = 25,763,814,337.38
  5. Step 5: Solve for x
    x = 25,763,814,337.38/256,502.08
  6. Step 6: Final answer
    x = 100,442.91

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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.