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Finding the Fourth Proportional to 351,660.38, 485,284.61 and 196,611.03

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Solution

The fourth proportional to 351,660.38, 485,284.61 and 196,611.03 is: 271,319.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,660.38 : 485,284.61 = 196,611.03 : x
  2. Step 2: Convert to fraction form
    351,660.38/485,284.61 = 196,611.03/x
  3. Step 3: Cross multiply
    351,660.38x = 485,284.61 × 196,611.03
  4. Step 4: Simplify right side
    351,660.38x = 95,412,307,506.78
  5. Step 5: Solve for x
    x = 95,412,307,506.78/351,660.38
  6. Step 6: Final answer
    x = 271,319.47

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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.