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Finding the Fourth Proportional to 319,578.96, 440,940.24 and 195,368.72

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Solution

The fourth proportional to 319,578.96, 440,940.24 and 195,368.72 is: 269,560.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,578.96 : 440,940.24 = 195,368.72 : x
  2. Step 2: Convert to fraction form
    319,578.96/440,940.24 = 195,368.72/x
  3. Step 3: Cross multiply
    319,578.96x = 440,940.24 × 195,368.72
  4. Step 4: Simplify right side
    319,578.96x = 86,145,930,285.29
  5. Step 5: Solve for x
    x = 86,145,930,285.29/319,578.96
  6. Step 6: Final answer
    x = 269,560.71

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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.