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Finding the Fourth Proportional to 203,591.80, 305,240.04 and 136,866.40

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Solution

The fourth proportional to 203,591.80, 305,240.04 and 136,866.40 is: 205,200.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,591.80 : 305,240.04 = 136,866.40 : x
  2. Step 2: Convert to fraction form
    203,591.80/305,240.04 = 136,866.40/x
  3. Step 3: Cross multiply
    203,591.80x = 305,240.04 × 136,866.40
  4. Step 4: Simplify right side
    203,591.80x = 41,777,105,410.66
  5. Step 5: Solve for x
    x = 41,777,105,410.66/203,591.80
  6. Step 6: Final answer
    x = 205,200.33

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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.