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Finding the Fourth Proportional to 424,542.40, 635,958.78 and 196,516.60

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Solution

The fourth proportional to 424,542.40, 635,958.78 and 196,516.60 is: 294,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,542.40 : 635,958.78 = 196,516.60 : x
  2. Step 2: Convert to fraction form
    424,542.40/635,958.78 = 196,516.60/x
  3. Step 3: Cross multiply
    424,542.40x = 635,958.78 × 196,516.60
  4. Step 4: Simplify right side
    424,542.40x = 124,976,457,185.75
  5. Step 5: Solve for x
    x = 124,976,457,185.75/424,542.40
  6. Step 6: Final answer
    x = 294,379.21

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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.