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Finding the Fourth Proportional to 331,674.40, 497,414.40 and 154,138.60

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Solution

The fourth proportional to 331,674.40, 497,414.40 and 154,138.60 is: 231,162.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,674.40 : 497,414.40 = 154,138.60 : x
  2. Step 2: Convert to fraction form
    331,674.40/497,414.40 = 154,138.60/x
  3. Step 3: Cross multiply
    331,674.40x = 497,414.40 × 154,138.60
  4. Step 4: Simplify right side
    331,674.40x = 76,670,759,235.84
  5. Step 5: Solve for x
    x = 76,670,759,235.84/331,674.40
  6. Step 6: Final answer
    x = 231,162.73

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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.