Home / 331,234.80-496,609.20-131,456.40

Finding the Fourth Proportional to 331,234.80, 496,609.20 and 131,456.40

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Solution

The fourth proportional to 331,234.80, 496,609.20 and 131,456.40 is: 197,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,234.80 : 496,609.20 = 131,456.40 : x
  2. Step 2: Convert to fraction form
    331,234.80/496,609.20 = 131,456.40/x
  3. Step 3: Cross multiply
    331,234.80x = 496,609.20 × 131,456.40
  4. Step 4: Simplify right side
    331,234.80x = 65,282,457,638.88
  5. Step 5: Solve for x
    x = 65,282,457,638.88/331,234.80
  6. Step 6: Final answer
    x = 197,088.16

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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.