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Finding the Fourth Proportional to 493,171.72, 680,612.90 and 278,330.56

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Solution

The fourth proportional to 493,171.72, 680,612.90 and 278,330.56 is: 384,116.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,171.72 : 680,612.90 = 278,330.56 : x
  2. Step 2: Convert to fraction form
    493,171.72/680,612.90 = 278,330.56/x
  3. Step 3: Cross multiply
    493,171.72x = 680,612.90 × 278,330.56
  4. Step 4: Simplify right side
    493,171.72x = 189,435,369,600.22
  5. Step 5: Solve for x
    x = 189,435,369,600.22/493,171.72
  6. Step 6: Final answer
    x = 384,116.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.