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Finding the Fourth Proportional to 279,771.37, 386,072.41 and 158,912.28

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Solution

The fourth proportional to 279,771.37, 386,072.41 and 158,912.28 is: 219,292.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,771.37 : 386,072.41 = 158,912.28 : x
  2. Step 2: Convert to fraction form
    279,771.37/386,072.41 = 158,912.28/x
  3. Step 3: Cross multiply
    279,771.37x = 386,072.41 × 158,912.28
  4. Step 4: Simplify right side
    279,771.37x = 61,351,646,918.19
  5. Step 5: Solve for x
    x = 61,351,646,918.19/279,771.37
  6. Step 6: Final answer
    x = 219,292.08

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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.