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Finding the Fourth Proportional to 278,391.69, 384,181.56 and 151,067.27

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Solution

The fourth proportional to 278,391.69, 384,181.56 and 151,067.27 is: 208,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,391.69 : 384,181.56 = 151,067.27 : x
  2. Step 2: Convert to fraction form
    278,391.69/384,181.56 = 151,067.27/x
  3. Step 3: Cross multiply
    278,391.69x = 384,181.56 × 151,067.27
  4. Step 4: Simplify right side
    278,391.69x = 58,037,257,532.63
  5. Step 5: Solve for x
    x = 58,037,257,532.63/278,391.69
  6. Step 6: Final answer
    x = 208,473.38

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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.