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Finding the Fourth Proportional to 425,418.25, 587,074.66 and 231,825.55

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Solution

The fourth proportional to 425,418.25, 587,074.66 and 231,825.55 is: 319,917.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,418.25 : 587,074.66 = 231,825.55 : x
  2. Step 2: Convert to fraction form
    425,418.25/587,074.66 = 231,825.55/x
  3. Step 3: Cross multiply
    425,418.25x = 587,074.66 × 231,825.55
  4. Step 4: Simplify right side
    425,418.25x = 136,098,905,945.56
  5. Step 5: Solve for x
    x = 136,098,905,945.56/425,418.25
  6. Step 6: Final answer
    x = 319,917.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.