Home / 278,853.52-384,786.58-157,968.92

Finding the Fourth Proportional to 278,853.52, 384,786.58 and 157,968.92

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Solution

The fourth proportional to 278,853.52, 384,786.58 and 157,968.92 is: 217,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,853.52 : 384,786.58 = 157,968.92 : x
  2. Step 2: Convert to fraction form
    278,853.52/384,786.58 = 157,968.92/x
  3. Step 3: Cross multiply
    278,853.52x = 384,786.58 × 157,968.92
  4. Step 4: Simplify right side
    278,853.52x = 60,784,320,473.09
  5. Step 5: Solve for x
    x = 60,784,320,473.09/278,853.52
  6. Step 6: Final answer
    x = 217,979.39

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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.