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Finding the Fourth Proportional to 254,086.32, 380,993.13 and 85,550.43

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Solution

The fourth proportional to 254,086.32, 380,993.13 and 85,550.43 is: 128,279.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,086.32 : 380,993.13 = 85,550.43 : x
  2. Step 2: Convert to fraction form
    254,086.32/380,993.13 = 85,550.43/x
  3. Step 3: Cross multiply
    254,086.32x = 380,993.13 × 85,550.43
  4. Step 4: Simplify right side
    254,086.32x = 32,594,126,098.55
  5. Step 5: Solve for x
    x = 32,594,126,098.55/254,086.32
  6. Step 6: Final answer
    x = 128,279.74

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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.