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Finding the Fourth Proportional to 391,018.44, 539,539.74 and 227,709.48

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Solution

The fourth proportional to 391,018.44, 539,539.74 and 227,709.48 is: 314,200.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,018.44 : 539,539.74 = 227,709.48 : x
  2. Step 2: Convert to fraction form
    391,018.44/539,539.74 = 227,709.48/x
  3. Step 3: Cross multiply
    391,018.44x = 539,539.74 × 227,709.48
  4. Step 4: Simplify right side
    391,018.44x = 122,858,313,634.74
  5. Step 5: Solve for x
    x = 122,858,313,634.74/391,018.44
  6. Step 6: Final answer
    x = 314,200.82

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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.