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Finding the Fourth Proportional to 353,859.73, 488,340.25 and 200,912.15

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Solution

The fourth proportional to 353,859.73, 488,340.25 and 200,912.15 is: 277,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,859.73 : 488,340.25 = 200,912.15 : x
  2. Step 2: Convert to fraction form
    353,859.73/488,340.25 = 200,912.15/x
  3. Step 3: Cross multiply
    353,859.73x = 488,340.25 × 200,912.15
  4. Step 4: Simplify right side
    353,859.73x = 98,113,491,031.03
  5. Step 5: Solve for x
    x = 98,113,491,031.03/353,859.73
  6. Step 6: Final answer
    x = 277,266.62

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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.