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Finding the Fourth Proportional to 254,439.63, 381,659.49 and 85,960.44

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Solution

The fourth proportional to 254,439.63, 381,659.49 and 85,960.44 is: 128,940.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,439.63 : 381,659.49 = 85,960.44 : x
  2. Step 2: Convert to fraction form
    254,439.63/381,659.49 = 85,960.44/x
  3. Step 3: Cross multiply
    254,439.63x = 381,659.49 × 85,960.44
  4. Step 4: Simplify right side
    254,439.63x = 32,807,617,690.58
  5. Step 5: Solve for x
    x = 32,807,617,690.58/254,439.63
  6. Step 6: Final answer
    x = 128,940.68

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Double scale
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Similar ratio
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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.