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Finding the Fourth Proportional to 331,145.20, 496,717.80 and 296,930.80

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Solution

The fourth proportional to 331,145.20, 496,717.80 and 296,930.80 is: 445,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,145.20 : 496,717.80 = 296,930.80 : x
  2. Step 2: Convert to fraction form
    331,145.20/496,717.80 = 296,930.80/x
  3. Step 3: Cross multiply
    331,145.20x = 496,717.80 × 296,930.80
  4. Step 4: Simplify right side
    331,145.20x = 147,490,813,728.24
  5. Step 5: Solve for x
    x = 147,490,813,728.24/331,145.20
  6. Step 6: Final answer
    x = 445,396.20

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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.