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Finding the Fourth Proportional to 353,453.25, 530,100.02 and 100,728.31

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Solution

The fourth proportional to 353,453.25, 530,100.02 and 100,728.31 is: 151,069.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,453.25 : 530,100.02 = 100,728.31 : x
  2. Step 2: Convert to fraction form
    353,453.25/530,100.02 = 100,728.31/x
  3. Step 3: Cross multiply
    353,453.25x = 530,100.02 × 100,728.31
  4. Step 4: Simplify right side
    353,453.25x = 53,396,079,145.57
  5. Step 5: Solve for x
    x = 53,396,079,145.57/353,453.25
  6. Step 6: Final answer
    x = 151,069.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.