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Finding the Fourth Proportional to 229,408.60, 344,112.90 and 145,427.80

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Solution

The fourth proportional to 229,408.60, 344,112.90 and 145,427.80 is: 218,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,408.60 : 344,112.90 = 145,427.80 : x
  2. Step 2: Convert to fraction form
    229,408.60/344,112.90 = 145,427.80/x
  3. Step 3: Cross multiply
    229,408.60x = 344,112.90 × 145,427.80
  4. Step 4: Simplify right side
    229,408.60x = 50,043,581,998.62
  5. Step 5: Solve for x
    x = 50,043,581,998.62/229,408.60
  6. Step 6: Final answer
    x = 218,141.70

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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.