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Finding the Fourth Proportional to 380,959.37, 571,351.60 and 227,128.88

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Solution

The fourth proportional to 380,959.37, 571,351.60 and 227,128.88 is: 340,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,959.37 : 571,351.60 = 227,128.88 : x
  2. Step 2: Convert to fraction form
    380,959.37/571,351.60 = 227,128.88/x
  3. Step 3: Cross multiply
    380,959.37x = 571,351.60 × 227,128.88
  4. Step 4: Simplify right side
    380,959.37x = 129,770,447,858.56
  5. Step 5: Solve for x
    x = 129,770,447,858.56/380,959.37
  6. Step 6: Final answer
    x = 340,641.18

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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.