Home / 327,920.20-491,880.40-253,149.50

Finding the Fourth Proportional to 327,920.20, 491,880.40 and 253,149.50

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Solution

The fourth proportional to 327,920.20, 491,880.40 and 253,149.50 is: 379,724.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,920.20 : 491,880.40 = 253,149.50 : x
  2. Step 2: Convert to fraction form
    327,920.20/491,880.40 = 253,149.50/x
  3. Step 3: Cross multiply
    327,920.20x = 491,880.40 × 253,149.50
  4. Step 4: Simplify right side
    327,920.20x = 124,519,277,916.63
  5. Step 5: Solve for x
    x = 124,519,277,916.63/327,920.20
  6. Step 6: Final answer
    x = 379,724.33

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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.