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Finding the Fourth Proportional to 493,170.72, 680,611.52 and 278,329.56

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Solution

The fourth proportional to 493,170.72, 680,611.52 and 278,329.56 is: 384,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,170.72 : 680,611.52 = 278,329.56 : x
  2. Step 2: Convert to fraction form
    493,170.72/680,611.52 = 278,329.56/x
  3. Step 3: Cross multiply
    493,170.72x = 680,611.52 × 278,329.56
  4. Step 4: Simplify right side
    493,170.72x = 189,434,304,892.53
  5. Step 5: Solve for x
    x = 189,434,304,892.53/493,170.72
  6. Step 6: Final answer
    x = 384,115.07

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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.