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Finding the Fourth Proportional to 371,861.92, 513,213.12 and 220,959.04

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Solution

The fourth proportional to 371,861.92, 513,213.12 and 220,959.04 is: 304,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,861.92 : 513,213.12 = 220,959.04 : x
  2. Step 2: Convert to fraction form
    371,861.92/513,213.12 = 220,959.04/x
  3. Step 3: Cross multiply
    371,861.92x = 513,213.12 × 220,959.04
  4. Step 4: Simplify right side
    371,861.92x = 113,399,078,310.61
  5. Step 5: Solve for x
    x = 113,399,078,310.61/371,861.92
  6. Step 6: Final answer
    x = 304,949.42

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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.