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Finding the Fourth Proportional to 515,614.98, 773,459.73 and 215,793.90

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Solution

The fourth proportional to 515,614.98, 773,459.73 and 215,793.90 is: 323,706.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,614.98 : 773,459.73 = 215,793.90 : x
  2. Step 2: Convert to fraction form
    515,614.98/773,459.73 = 215,793.90/x
  3. Step 3: Cross multiply
    515,614.98x = 773,459.73 × 215,793.90
  4. Step 4: Simplify right side
    515,614.98x = 166,907,891,629.65
  5. Step 5: Solve for x
    x = 166,907,891,629.65/515,614.98
  6. Step 6: Final answer
    x = 323,706.44

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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.