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Finding the Fourth Proportional to 254,105.29, 381,193.13 and 85,673.83

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Solution

The fourth proportional to 254,105.29, 381,193.13 and 85,673.83 is: 128,522.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,105.29 : 381,193.13 = 85,673.83 : x
  2. Step 2: Convert to fraction form
    254,105.29/381,193.13 = 85,673.83/x
  3. Step 3: Cross multiply
    254,105.29x = 381,193.13 × 85,673.83
  4. Step 4: Simplify right side
    254,105.29x = 32,658,275,416.79
  5. Step 5: Solve for x
    x = 32,658,275,416.79/254,105.29
  6. Step 6: Final answer
    x = 128,522.61

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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.