Home / 305,190.82-457,698.75-91,979.38

Finding the Fourth Proportional to 305,190.82, 457,698.75 and 91,979.38

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Solution

The fourth proportional to 305,190.82, 457,698.75 and 91,979.38 is: 137,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,190.82 : 457,698.75 = 91,979.38 : x
  2. Step 2: Convert to fraction form
    305,190.82/457,698.75 = 91,979.38/x
  3. Step 3: Cross multiply
    305,190.82x = 457,698.75 × 91,979.38
  4. Step 4: Simplify right side
    305,190.82x = 42,098,847,251.78
  5. Step 5: Solve for x
    x = 42,098,847,251.78/305,190.82
  6. Step 6: Final answer
    x = 137,942.70

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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.