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Finding the Fourth Proportional to 486,301.98, 729,489.84 and 131,310.84

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Solution

The fourth proportional to 486,301.98, 729,489.84 and 131,310.84 is: 196,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,301.98 : 729,489.84 = 131,310.84 : x
  2. Step 2: Convert to fraction form
    486,301.98/729,489.84 = 131,310.84/x
  3. Step 3: Cross multiply
    486,301.98x = 729,489.84 × 131,310.84
  4. Step 4: Simplify right side
    486,301.98x = 95,789,923,661.87
  5. Step 5: Solve for x
    x = 95,789,923,661.87/486,301.98
  6. Step 6: Final answer
    x = 196,976.22

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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.