Home / 320,682.43-442,511.61-217,105.92

Finding the Fourth Proportional to 320,682.43, 442,511.61 and 217,105.92

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Solution

The fourth proportional to 320,682.43, 442,511.61 and 217,105.92 is: 299,585.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,682.43 : 442,511.61 = 217,105.92 : x
  2. Step 2: Convert to fraction form
    320,682.43/442,511.61 = 217,105.92/x
  3. Step 3: Cross multiply
    320,682.43x = 442,511.61 × 217,105.92
  4. Step 4: Simplify right side
    320,682.43x = 96,071,889,114.20
  5. Step 5: Solve for x
    x = 96,071,889,114.20/320,682.43
  6. Step 6: Final answer
    x = 299,585.76

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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.