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Finding the Fourth Proportional to 280,487.75, 420,436.38 and 168,229.04

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Solution

The fourth proportional to 280,487.75, 420,436.38 and 168,229.04 is: 252,166.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,487.75 : 420,436.38 = 168,229.04 : x
  2. Step 2: Convert to fraction form
    280,487.75/420,436.38 = 168,229.04/x
  3. Step 3: Cross multiply
    280,487.75x = 420,436.38 × 168,229.04
  4. Step 4: Simplify right side
    280,487.75x = 70,729,608,588.48
  5. Step 5: Solve for x
    x = 70,729,608,588.48/280,487.75
  6. Step 6: Final answer
    x = 252,166.48

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1.5x scale

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.