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Finding the Fourth Proportional to 203,716.20, 305,574.30 and 53,979.60

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Solution

The fourth proportional to 203,716.20, 305,574.30 and 53,979.60 is: 80,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,716.20 : 305,574.30 = 53,979.60 : x
  2. Step 2: Convert to fraction form
    203,716.20/305,574.30 = 53,979.60/x
  3. Step 3: Cross multiply
    203,716.20x = 305,574.30 × 53,979.60
  4. Step 4: Simplify right side
    203,716.20x = 16,494,778,484.28
  5. Step 5: Solve for x
    x = 16,494,778,484.28/203,716.20
  6. Step 6: Final answer
    x = 80,969.40

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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.