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Finding the Fourth Proportional to 303,067.68, 418,062.15 and 189,693.60

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Solution

The fourth proportional to 303,067.68, 418,062.15 and 189,693.60 is: 261,669.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,067.68 : 418,062.15 = 189,693.60 : x
  2. Step 2: Convert to fraction form
    303,067.68/418,062.15 = 189,693.60/x
  3. Step 3: Cross multiply
    303,067.68x = 418,062.15 × 189,693.60
  4. Step 4: Simplify right side
    303,067.68x = 79,303,714,257.24
  5. Step 5: Solve for x
    x = 79,303,714,257.24/303,067.68
  6. Step 6: Final answer
    x = 261,669.98

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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.