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Finding the Fourth Proportional to 327,124.40, 490,103.40 and 280,468.40

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Solution

The fourth proportional to 327,124.40, 490,103.40 and 280,468.40 is: 420,202.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,124.40 : 490,103.40 = 280,468.40 : x
  2. Step 2: Convert to fraction form
    327,124.40/490,103.40 = 280,468.40/x
  3. Step 3: Cross multiply
    327,124.40x = 490,103.40 × 280,468.40
  4. Step 4: Simplify right side
    327,124.40x = 137,458,516,432.56
  5. Step 5: Solve for x
    x = 137,458,516,432.56/327,124.40
  6. Step 6: Final answer
    x = 420,202.58

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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.