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Finding the Fourth Proportional to 256,791.08, 384,977.88 and 107,142.89

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Solution

The fourth proportional to 256,791.08, 384,977.88 and 107,142.89 is: 160,627.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,791.08 : 384,977.88 = 107,142.89 : x
  2. Step 2: Convert to fraction form
    256,791.08/384,977.88 = 107,142.89/x
  3. Step 3: Cross multiply
    256,791.08x = 384,977.88 × 107,142.89
  4. Step 4: Simplify right side
    256,791.08x = 41,247,640,724.38
  5. Step 5: Solve for x
    x = 41,247,640,724.38/256,791.08
  6. Step 6: Final answer
    x = 160,627.23

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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.