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Finding the Fourth Proportional to 203,859.70, 305,789.55 and 119,660.20

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Solution

The fourth proportional to 203,859.70, 305,789.55 and 119,660.20 is: 179,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,859.70 : 305,789.55 = 119,660.20 : x
  2. Step 2: Convert to fraction form
    203,859.70/305,789.55 = 119,660.20/x
  3. Step 3: Cross multiply
    203,859.70x = 305,789.55 × 119,660.20
  4. Step 4: Simplify right side
    203,859.70x = 36,590,838,710.91
  5. Step 5: Solve for x
    x = 36,590,838,710.91/203,859.70
  6. Step 6: Final answer
    x = 179,490.30

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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.