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Finding the Fourth Proportional to 201,578.18, 278,178.10 and 110,940.71

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Solution

The fourth proportional to 201,578.18, 278,178.10 and 110,940.71 is: 153,098.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,578.18 : 278,178.10 = 110,940.71 : x
  2. Step 2: Convert to fraction form
    201,578.18/278,178.10 = 110,940.71/x
  3. Step 3: Cross multiply
    201,578.18x = 278,178.10 × 110,940.71
  4. Step 4: Simplify right side
    201,578.18x = 30,861,274,252.21
  5. Step 5: Solve for x
    x = 30,861,274,252.21/201,578.18
  6. Step 6: Final answer
    x = 153,098.29

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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.