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Finding the Fourth Proportional to 256,863.44, 354,485.32 and 143,679.44

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Solution

The fourth proportional to 256,863.44, 354,485.32 and 143,679.44 is: 198,285.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,863.44 : 354,485.32 = 143,679.44 : x
  2. Step 2: Convert to fraction form
    256,863.44/354,485.32 = 143,679.44/x
  3. Step 3: Cross multiply
    256,863.44x = 354,485.32 × 143,679.44
  4. Step 4: Simplify right side
    256,863.44x = 50,932,252,265.82
  5. Step 5: Solve for x
    x = 50,932,252,265.82/256,863.44
  6. Step 6: Final answer
    x = 198,285.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.