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Finding the Fourth Proportional to 395,067.73, 545,189.66 and 213,775.69

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Solution

The fourth proportional to 395,067.73, 545,189.66 and 213,775.69 is: 295,008.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,067.73 : 545,189.66 = 213,775.69 : x
  2. Step 2: Convert to fraction form
    395,067.73/545,189.66 = 213,775.69/x
  3. Step 3: Cross multiply
    395,067.73x = 545,189.66 × 213,775.69
  4. Step 4: Simplify right side
    395,067.73x = 116,548,293,555.86
  5. Step 5: Solve for x
    x = 116,548,293,555.86/395,067.73
  6. Step 6: Final answer
    x = 295,008.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.