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Finding the Fourth Proportional to 493,552.26, 681,096.87 and 278,679.60

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Solution

The fourth proportional to 493,552.26, 681,096.87 and 278,679.60 is: 384,574.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,552.26 : 681,096.87 = 278,679.60 : x
  2. Step 2: Convert to fraction form
    493,552.26/681,096.87 = 278,679.60/x
  3. Step 3: Cross multiply
    493,552.26x = 681,096.87 × 278,679.60
  4. Step 4: Simplify right side
    493,552.26x = 189,807,803,292.85
  5. Step 5: Solve for x
    x = 189,807,803,292.85/493,552.26
  6. Step 6: Final answer
    x = 384,574.88

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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.