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Finding the Fourth Proportional to 253,918.40, 380,940.57 and 179,184.56

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Solution

The fourth proportional to 253,918.40, 380,940.57 and 179,184.56 is: 268,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,918.40 : 380,940.57 = 179,184.56 : x
  2. Step 2: Convert to fraction form
    253,918.40/380,940.57 = 179,184.56/x
  3. Step 3: Cross multiply
    253,918.40x = 380,940.57 × 179,184.56
  4. Step 4: Simplify right side
    253,918.40x = 68,258,666,516.90
  5. Step 5: Solve for x
    x = 68,258,666,516.90/253,918.40
  6. Step 6: Final answer
    x = 268,821.27

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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.