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Finding the Fourth Proportional to 351,590.94, 485,160.72 and 196,513.20

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Solution

The fourth proportional to 351,590.94, 485,160.72 and 196,513.20 is: 271,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,590.94 : 485,160.72 = 196,513.20 : x
  2. Step 2: Convert to fraction form
    351,590.94/485,160.72 = 196,513.20/x
  3. Step 3: Cross multiply
    351,590.94x = 485,160.72 × 196,513.20
  4. Step 4: Simplify right side
    351,590.94x = 95,340,485,601.50
  5. Step 5: Solve for x
    x = 95,340,485,601.50/351,590.94
  6. Step 6: Final answer
    x = 271,168.78

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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.