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Finding the Fourth Proportional to 363,351.80, 545,351.70 and 213,404.60

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Solution

The fourth proportional to 363,351.80, 545,351.70 and 213,404.60 is: 320,297.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,351.80 : 545,351.70 = 213,404.60 : x
  2. Step 2: Convert to fraction form
    363,351.80/545,351.70 = 213,404.60/x
  3. Step 3: Cross multiply
    363,351.80x = 545,351.70 × 213,404.60
  4. Step 4: Simplify right side
    363,351.80x = 116,380,561,397.82
  5. Step 5: Solve for x
    x = 116,380,561,397.82/363,351.80
  6. Step 6: Final answer
    x = 320,297.19

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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.