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Finding the Fourth Proportional to 389,891.40, 538,096.74 and 236,954.50

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Solution

The fourth proportional to 389,891.40, 538,096.74 and 236,954.50 is: 327,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,891.40 : 538,096.74 = 236,954.50 : x
  2. Step 2: Convert to fraction form
    389,891.40/538,096.74 = 236,954.50/x
  3. Step 3: Cross multiply
    389,891.40x = 538,096.74 × 236,954.50
  4. Step 4: Simplify right side
    389,891.40x = 127,504,443,978.33
  5. Step 5: Solve for x
    x = 127,504,443,978.33/389,891.40
  6. Step 6: Final answer
    x = 327,025.54

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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.