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Finding the Fourth Proportional to 354,103.92, 488,770.20 and 231,615.72

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Solution

The fourth proportional to 354,103.92, 488,770.20 and 231,615.72 is: 319,699.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,103.92 : 488,770.20 = 231,615.72 : x
  2. Step 2: Convert to fraction form
    354,103.92/488,770.20 = 231,615.72/x
  3. Step 3: Cross multiply
    354,103.92x = 488,770.20 × 231,615.72
  4. Step 4: Simplify right side
    354,103.92x = 113,206,861,787.54
  5. Step 5: Solve for x
    x = 113,206,861,787.54/354,103.92
  6. Step 6: Final answer
    x = 319,699.54

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1.5x scale

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.