Home / 386,716.28-579,935.45-133,928.69

Finding the Fourth Proportional to 386,716.28, 579,935.45 and 133,928.69

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Solution

The fourth proportional to 386,716.28, 579,935.45 and 133,928.69 is: 200,844.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,716.28 : 579,935.45 = 133,928.69 : x
  2. Step 2: Convert to fraction form
    386,716.28/579,935.45 = 133,928.69/x
  3. Step 3: Cross multiply
    386,716.28x = 579,935.45 × 133,928.69
  4. Step 4: Simplify right side
    386,716.28x = 77,669,995,046.99
  5. Step 5: Solve for x
    x = 77,669,995,046.99/386,716.28
  6. Step 6: Final answer
    x = 200,844.91

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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.