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Finding the Fourth Proportional to 331,087.80, 496,631.70 and 297,910.20

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Solution

The fourth proportional to 331,087.80, 496,631.70 and 297,910.20 is: 446,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,087.80 : 496,631.70 = 297,910.20 : x
  2. Step 2: Convert to fraction form
    331,087.80/496,631.70 = 297,910.20/x
  3. Step 3: Cross multiply
    331,087.80x = 496,631.70 × 297,910.20
  4. Step 4: Simplify right side
    331,087.80x = 147,951,649,073.34
  5. Step 5: Solve for x
    x = 147,951,649,073.34/331,087.80
  6. Step 6: Final answer
    x = 446,865.30

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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.