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Finding the Fourth Proportional to 493,163.70, 680,601.87 and 278,322.54

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Solution

The fourth proportional to 493,163.70, 680,601.87 and 278,322.54 is: 384,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,163.70 : 680,601.87 = 278,322.54 : x
  2. Step 2: Convert to fraction form
    493,163.70/680,601.87 = 278,322.54/x
  3. Step 3: Cross multiply
    493,163.70x = 680,601.87 × 278,322.54
  4. Step 4: Simplify right side
    493,163.70x = 189,426,841,187.15
  5. Step 5: Solve for x
    x = 189,426,841,187.15/493,163.70
  6. Step 6: Final answer
    x = 384,105.40

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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.