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Finding the Fourth Proportional to 386,388.28, 579,584.58 and 175,879

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Solution

The fourth proportional to 386,388.28, 579,584.58 and 175,879 is: 263,819.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,388.28 : 579,584.58 = 175,879 : x
  2. Step 2: Convert to fraction form
    386,388.28/579,584.58 = 175,879/x
  3. Step 3: Cross multiply
    386,388.28x = 579,584.58 × 175,879
  4. Step 4: Simplify right side
    386,388.28x = 101,936,756,345.82
  5. Step 5: Solve for x
    x = 101,936,756,345.82/386,388.28
  6. Step 6: Final answer
    x = 263,819.48

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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.