Home / 327,972.42-491,644.89-128,226.42

Finding the Fourth Proportional to 327,972.42, 491,644.89 and 128,226.42

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Solution

The fourth proportional to 327,972.42, 491,644.89 and 128,226.42 is: 192,216.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,972.42 : 491,644.89 = 128,226.42 : x
  2. Step 2: Convert to fraction form
    327,972.42/491,644.89 = 128,226.42/x
  3. Step 3: Cross multiply
    327,972.42x = 491,644.89 × 128,226.42
  4. Step 4: Simplify right side
    327,972.42x = 63,041,864,155.99
  5. Step 5: Solve for x
    x = 63,041,864,155.99/327,972.42
  6. Step 6: Final answer
    x = 192,216.97

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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.