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Finding the Fourth Proportional to 286,992.72, 396,049.95 and 159,668.28

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Solution

The fourth proportional to 286,992.72, 396,049.95 and 159,668.28 is: 220,342.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,992.72 : 396,049.95 = 159,668.28 : x
  2. Step 2: Convert to fraction form
    286,992.72/396,049.95 = 159,668.28/x
  3. Step 3: Cross multiply
    286,992.72x = 396,049.95 × 159,668.28
  4. Step 4: Simplify right side
    286,992.72x = 63,236,614,310.59
  5. Step 5: Solve for x
    x = 63,236,614,310.59/286,992.72
  6. Step 6: Final answer
    x = 220,342.22

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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.