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Finding the Fourth Proportional to 303,071.43, 418,067.32 and 189,697.35

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Solution

The fourth proportional to 303,071.43, 418,067.32 and 189,697.35 is: 261,675.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,071.43 : 418,067.32 = 189,697.35 : x
  2. Step 2: Convert to fraction form
    303,071.43/418,067.32 = 189,697.35/x
  3. Step 3: Cross multiply
    303,071.43x = 418,067.32 × 189,697.35
  4. Step 4: Simplify right side
    303,071.43x = 79,306,262,725.60
  5. Step 5: Solve for x
    x = 79,306,262,725.60/303,071.43
  6. Step 6: Final answer
    x = 261,675.15

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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.