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Finding the Fourth Proportional to 354,452.92, 531,220.11 and 143,976.04

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Solution

The fourth proportional to 354,452.92, 531,220.11 and 143,976.04 is: 215,777.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,452.92 : 531,220.11 = 143,976.04 : x
  2. Step 2: Convert to fraction form
    354,452.92/531,220.11 = 143,976.04/x
  3. Step 3: Cross multiply
    354,452.92x = 531,220.11 × 143,976.04
  4. Step 4: Simplify right side
    354,452.92x = 76,482,967,806.16
  5. Step 5: Solve for x
    x = 76,482,967,806.16/354,452.92
  6. Step 6: Final answer
    x = 215,777.51

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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.