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Finding the Fourth Proportional to 291,857.36, 437,954.85 and 123,366.78

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Solution

The fourth proportional to 291,857.36, 437,954.85 and 123,366.78 is: 185,121.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,857.36 : 437,954.85 = 123,366.78 : x
  2. Step 2: Convert to fraction form
    291,857.36/437,954.85 = 123,366.78/x
  3. Step 3: Cross multiply
    291,857.36x = 437,954.85 × 123,366.78
  4. Step 4: Simplify right side
    291,857.36x = 54,029,079,629.88
  5. Step 5: Solve for x
    x = 54,029,079,629.88/291,857.36
  6. Step 6: Final answer
    x = 185,121.53

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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.