Home / 271,918.31-407,885.50-129,778.54

Finding the Fourth Proportional to 271,918.31, 407,885.50 and 129,778.54

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Solution

The fourth proportional to 271,918.31, 407,885.50 and 129,778.54 is: 194,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,918.31 : 407,885.50 = 129,778.54 : x
  2. Step 2: Convert to fraction form
    271,918.31/407,885.50 = 129,778.54/x
  3. Step 3: Cross multiply
    271,918.31x = 407,885.50 × 129,778.54
  4. Step 4: Simplify right side
    271,918.31x = 52,934,783,819.68
  5. Step 5: Solve for x
    x = 52,934,783,819.68/271,918.31
  6. Step 6: Final answer
    x = 194,671.65

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1.5x scale

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.