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Finding the Fourth Proportional to 239,634.52, 359,497.86 and 91,879

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Solution

The fourth proportional to 239,634.52, 359,497.86 and 91,879 is: 137,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,634.52 : 359,497.86 = 91,879 : x
  2. Step 2: Convert to fraction form
    239,634.52/359,497.86 = 91,879/x
  3. Step 3: Cross multiply
    239,634.52x = 359,497.86 × 91,879
  4. Step 4: Simplify right side
    239,634.52x = 33,030,303,878.94
  5. Step 5: Solve for x
    x = 33,030,303,878.94/239,634.52
  6. Step 6: Final answer
    x = 137,836.17

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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.