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Finding the Fourth Proportional to 263,143.82, 363,138.72 and 142,285.07

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Solution

The fourth proportional to 263,143.82, 363,138.72 and 142,285.07 is: 196,353.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,143.82 : 363,138.72 = 142,285.07 : x
  2. Step 2: Convert to fraction form
    263,143.82/363,138.72 = 142,285.07/x
  3. Step 3: Cross multiply
    263,143.82x = 363,138.72 × 142,285.07
  4. Step 4: Simplify right side
    263,143.82x = 51,669,218,194.91
  5. Step 5: Solve for x
    x = 51,669,218,194.91/263,143.82
  6. Step 6: Final answer
    x = 196,353.53

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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.