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Finding the Fourth Proportional to 493,171.22, 680,576.43 and 278,356.79

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Solution

The fourth proportional to 493,171.22, 680,576.43 and 278,356.79 is: 384,132.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,171.22 : 680,576.43 = 278,356.79 : x
  2. Step 2: Convert to fraction form
    493,171.22/680,576.43 = 278,356.79/x
  3. Step 3: Cross multiply
    493,171.22x = 680,576.43 × 278,356.79
  4. Step 4: Simplify right side
    493,171.22x = 189,443,067,001.58
  5. Step 5: Solve for x
    x = 189,443,067,001.58/493,171.22
  6. Step 6: Final answer
    x = 384,132.45

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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.