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Finding the Fourth Proportional to 171,990.38, 257,987.01 and 47,338.22

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Solution

The fourth proportional to 171,990.38, 257,987.01 and 47,338.22 is: 71,007.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,990.38 : 257,987.01 = 47,338.22 : x
  2. Step 2: Convert to fraction form
    171,990.38/257,987.01 = 47,338.22/x
  3. Step 3: Cross multiply
    171,990.38x = 257,987.01 × 47,338.22
  4. Step 4: Simplify right side
    171,990.38x = 12,212,645,836.52
  5. Step 5: Solve for x
    x = 12,212,645,836.52/171,990.38
  6. Step 6: Final answer
    x = 71,007.73

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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.