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Finding the Fourth Proportional to 330,765.96, 496,312.95 and 131,081.93

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Solution

The fourth proportional to 330,765.96, 496,312.95 and 131,081.93 is: 196,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,765.96 : 496,312.95 = 131,081.93 : x
  2. Step 2: Convert to fraction form
    330,765.96/496,312.95 = 131,081.93/x
  3. Step 3: Cross multiply
    330,765.96x = 496,312.95 × 131,081.93
  4. Step 4: Simplify right side
    330,765.96x = 65,057,659,369.99
  5. Step 5: Solve for x
    x = 65,057,659,369.99/330,765.96
  6. Step 6: Final answer
    x = 196,687.89

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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.