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Finding the Fourth Proportional to 199,651.56, 299,377.44 and 66,485.40

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Solution

The fourth proportional to 199,651.56, 299,377.44 and 66,485.40 is: 99,694.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,651.56 : 299,377.44 = 66,485.40 : x
  2. Step 2: Convert to fraction form
    199,651.56/299,377.44 = 66,485.40/x
  3. Step 3: Cross multiply
    199,651.56x = 299,377.44 × 66,485.40
  4. Step 4: Simplify right side
    199,651.56x = 19,904,228,849.38
  5. Step 5: Solve for x
    x = 19,904,228,849.38/199,651.56
  6. Step 6: Final answer
    x = 99,694.83

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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.