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Finding the Fourth Proportional to 340,517.28, 469,928.37 and 189,614.28

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Solution

The fourth proportional to 340,517.28, 469,928.37 and 189,614.28 is: 261,675.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,517.28 : 469,928.37 = 189,614.28 : x
  2. Step 2: Convert to fraction form
    340,517.28/469,928.37 = 189,614.28/x
  3. Step 3: Cross multiply
    340,517.28x = 469,928.37 × 189,614.28
  4. Step 4: Simplify right side
    340,517.28x = 89,105,129,529.12
  5. Step 5: Solve for x
    x = 89,105,129,529.12/340,517.28
  6. Step 6: Final answer
    x = 261,675.79

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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.