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Finding the Fourth Proportional to 331,855.80, 498,042.90 and 154,384.80

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Solution

The fourth proportional to 331,855.80, 498,042.90 and 154,384.80 is: 231,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,855.80 : 498,042.90 = 154,384.80 : x
  2. Step 2: Convert to fraction form
    331,855.80/498,042.90 = 154,384.80/x
  3. Step 3: Cross multiply
    331,855.80x = 498,042.90 × 154,384.80
  4. Step 4: Simplify right side
    331,855.80x = 76,890,253,507.92
  5. Step 5: Solve for x
    x = 76,890,253,507.92/331,855.80
  6. Step 6: Final answer
    x = 231,697.78

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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.