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Finding the Fourth Proportional to 254,047, 381,086.46 and 85,553.56

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Solution

The fourth proportional to 254,047, 381,086.46 and 85,553.56 is: 128,335.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,047 : 381,086.46 = 85,553.56 : x
  2. Step 2: Convert to fraction form
    254,047/381,086.46 = 85,553.56/x
  3. Step 3: Cross multiply
    254,047x = 381,086.46 × 85,553.56
  4. Step 4: Simplify right side
    254,047x = 32,603,303,320.80
  5. Step 5: Solve for x
    x = 32,603,303,320.80/254,047
  6. Step 6: Final answer
    x = 128,335.71

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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.