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Finding the Fourth Proportional to 381,222.76, 571,112.32 and 254,480.80

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Solution

The fourth proportional to 381,222.76, 571,112.32 and 254,480.80 is: 381,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,222.76 : 571,112.32 = 254,480.80 : x
  2. Step 2: Convert to fraction form
    381,222.76/571,112.32 = 254,480.80/x
  3. Step 3: Cross multiply
    381,222.76x = 571,112.32 × 254,480.80
  4. Step 4: Simplify right side
    381,222.76x = 145,337,120,083.46
  5. Step 5: Solve for x
    x = 145,337,120,083.46/381,222.76
  6. Step 6: Final answer
    x = 381,239.36

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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.