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Finding the Fourth Proportional to 306,286.32, 459,451.36 and 81,645.60

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Solution

The fourth proportional to 306,286.32, 459,451.36 and 81,645.60 is: 122,474.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,286.32 : 459,451.36 = 81,645.60 : x
  2. Step 2: Convert to fraction form
    306,286.32/459,451.36 = 81,645.60/x
  3. Step 3: Cross multiply
    306,286.32x = 459,451.36 × 81,645.60
  4. Step 4: Simplify right side
    306,286.32x = 37,512,181,958.02
  5. Step 5: Solve for x
    x = 37,512,181,958.02/306,286.32
  6. Step 6: Final answer
    x = 122,474.23

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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.