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Finding the Fourth Proportional to 331,369.20, 497,183.40 and 121,028.40

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Solution

The fourth proportional to 331,369.20, 497,183.40 and 121,028.40 is: 181,589.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,369.20 : 497,183.40 = 121,028.40 : x
  2. Step 2: Convert to fraction form
    331,369.20/497,183.40 = 121,028.40/x
  3. Step 3: Cross multiply
    331,369.20x = 497,183.40 × 121,028.40
  4. Step 4: Simplify right side
    331,369.20x = 60,173,311,408.56
  5. Step 5: Solve for x
    x = 60,173,311,408.56/331,369.20
  6. Step 6: Final answer
    x = 181,589.93

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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.