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Finding the Fourth Proportional to 203,188.90, 304,819.80 and 84,872.20

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Solution

The fourth proportional to 203,188.90, 304,819.80 and 84,872.20 is: 127,323.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,188.90 : 304,819.80 = 84,872.20 : x
  2. Step 2: Convert to fraction form
    203,188.90/304,819.80 = 84,872.20/x
  3. Step 3: Cross multiply
    203,188.90x = 304,819.80 × 84,872.20
  4. Step 4: Simplify right side
    203,188.90x = 25,870,727,029.56
  5. Step 5: Solve for x
    x = 25,870,727,029.56/203,188.90
  6. Step 6: Final answer
    x = 127,323.53

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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.