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Finding the Fourth Proportional to 545,343.98, 816,379.36 and 331,451.73

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Solution

The fourth proportional to 545,343.98, 816,379.36 and 331,451.73 is: 496,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,343.98 : 816,379.36 = 331,451.73 : x
  2. Step 2: Convert to fraction form
    545,343.98/816,379.36 = 331,451.73/x
  3. Step 3: Cross multiply
    545,343.98x = 816,379.36 × 331,451.73
  4. Step 4: Simplify right side
    545,343.98x = 270,590,350,379.66
  5. Step 5: Solve for x
    x = 270,590,350,379.66/545,343.98
  6. Step 6: Final answer
    x = 496,182.89

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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.