Home / 218,408.31-301,353.62-122,880.15

Finding the Fourth Proportional to 218,408.31, 301,353.62 and 122,880.15

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Solution

The fourth proportional to 218,408.31, 301,353.62 and 122,880.15 is: 169,546.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,408.31 : 301,353.62 = 122,880.15 : x
  2. Step 2: Convert to fraction form
    218,408.31/301,353.62 = 122,880.15/x
  3. Step 3: Cross multiply
    218,408.31x = 301,353.62 × 122,880.15
  4. Step 4: Simplify right side
    218,408.31x = 37,030,377,414.24
  5. Step 5: Solve for x
    x = 37,030,377,414.24/218,408.31
  6. Step 6: Final answer
    x = 169,546.56

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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.