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Finding the Fourth Proportional to 331,241.80, 496,619.70 and 131,463.40

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Solution

The fourth proportional to 331,241.80, 496,619.70 and 131,463.40 is: 197,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,241.80 : 496,619.70 = 131,463.40 : x
  2. Step 2: Convert to fraction form
    331,241.80/496,619.70 = 131,463.40/x
  3. Step 3: Cross multiply
    331,241.80x = 496,619.70 × 131,463.40
  4. Step 4: Simplify right side
    331,241.80x = 65,287,314,268.98
  5. Step 5: Solve for x
    x = 65,287,314,268.98/331,241.80
  6. Step 6: Final answer
    x = 197,098.66

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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.