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Finding the Fourth Proportional to 217,891.68, 326,671.36 and 112,643.52

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Solution

The fourth proportional to 217,891.68, 326,671.36 and 112,643.52 is: 168,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,891.68 : 326,671.36 = 112,643.52 : x
  2. Step 2: Convert to fraction form
    217,891.68/326,671.36 = 112,643.52/x
  3. Step 3: Cross multiply
    217,891.68x = 326,671.36 × 112,643.52
  4. Step 4: Simplify right side
    217,891.68x = 36,797,411,873.59
  5. Step 5: Solve for x
    x = 36,797,411,873.59/217,891.68
  6. Step 6: Final answer
    x = 168,879.38

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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.