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Finding the Fourth Proportional to 331,201.20, 496,931.40 and 120,860.40

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Solution

The fourth proportional to 331,201.20, 496,931.40 and 120,860.40 is: 181,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,201.20 : 496,931.40 = 120,860.40 : x
  2. Step 2: Convert to fraction form
    331,201.20/496,931.40 = 120,860.40/x
  3. Step 3: Cross multiply
    331,201.20x = 496,931.40 × 120,860.40
  4. Step 4: Simplify right side
    331,201.20x = 60,059,327,776.56
  5. Step 5: Solve for x
    x = 60,059,327,776.56/331,201.20
  6. Step 6: Final answer
    x = 181,337.89

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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.