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Finding the Fourth Proportional to 356,367.92, 491,601.30 and 220,358.38

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Solution

The fourth proportional to 356,367.92, 491,601.30 and 220,358.38 is: 303,979.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,367.92 : 491,601.30 = 220,358.38 : x
  2. Step 2: Convert to fraction form
    356,367.92/491,601.30 = 220,358.38/x
  3. Step 3: Cross multiply
    356,367.92x = 491,601.30 × 220,358.38
  4. Step 4: Simplify right side
    356,367.92x = 108,328,466,073.89
  5. Step 5: Solve for x
    x = 108,328,466,073.89/356,367.92
  6. Step 6: Final answer
    x = 303,979.29

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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.