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Finding the Fourth Proportional to 363,918.80, 545,975.40 and 324,747.20

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Solution

The fourth proportional to 363,918.80, 545,975.40 and 324,747.20 is: 487,207.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,918.80 : 545,975.40 = 324,747.20 : x
  2. Step 2: Convert to fraction form
    363,918.80/545,975.40 = 324,747.20/x
  3. Step 3: Cross multiply
    363,918.80x = 545,975.40 × 324,747.20
  4. Step 4: Simplify right side
    363,918.80x = 177,303,982,418.88
  5. Step 5: Solve for x
    x = 177,303,982,418.88/363,918.80
  6. Step 6: Final answer
    x = 487,207.54

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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.