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Finding the Fourth Proportional to 303,809.40, 419,267.34 and 190,694.52

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Solution

The fourth proportional to 303,809.40, 419,267.34 and 190,694.52 is: 263,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,809.40 : 419,267.34 = 190,694.52 : x
  2. Step 2: Convert to fraction form
    303,809.40/419,267.34 = 190,694.52/x
  3. Step 3: Cross multiply
    303,809.40x = 419,267.34 × 190,694.52
  4. Step 4: Simplify right side
    303,809.40x = 79,951,984,152.98
  5. Step 5: Solve for x
    x = 79,951,984,152.98/303,809.40
  6. Step 6: Final answer
    x = 263,164.95

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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.