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Finding the Fourth Proportional to 308,758.91, 426,078.14 and 170,943.98

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Solution

The fourth proportional to 308,758.91, 426,078.14 and 170,943.98 is: 235,897.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,758.91 : 426,078.14 = 170,943.98 : x
  2. Step 2: Convert to fraction form
    308,758.91/426,078.14 = 170,943.98/x
  3. Step 3: Cross multiply
    308,758.91x = 426,078.14 × 170,943.98
  4. Step 4: Simplify right side
    308,758.91x = 72,835,491,339.57
  5. Step 5: Solve for x
    x = 72,835,491,339.57/308,758.91
  6. Step 6: Final answer
    x = 235,897.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.