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Finding the Fourth Proportional to 203,558.80, 280,616.16 and 142,944.88

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Solution

The fourth proportional to 203,558.80, 280,616.16 and 142,944.88 is: 197,056.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,558.80 : 280,616.16 = 142,944.88 : x
  2. Step 2: Convert to fraction form
    203,558.80/280,616.16 = 142,944.88/x
  3. Step 3: Cross multiply
    203,558.80x = 280,616.16 × 142,944.88
  4. Step 4: Simplify right side
    203,558.80x = 40,112,643,317.26
  5. Step 5: Solve for x
    x = 40,112,643,317.26/203,558.80
  6. Step 6: Final answer
    x = 197,056.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.