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Finding the Fourth Proportional to 308,907.63, 426,165.84 and 187,951.95

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Solution

The fourth proportional to 308,907.63, 426,165.84 and 187,951.95 is: 259,296.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,907.63 : 426,165.84 = 187,951.95 : x
  2. Step 2: Convert to fraction form
    308,907.63/426,165.84 = 187,951.95/x
  3. Step 3: Cross multiply
    308,907.63x = 426,165.84 × 187,951.95
  4. Step 4: Simplify right side
    308,907.63x = 80,098,700,651.39
  5. Step 5: Solve for x
    x = 80,098,700,651.39/308,907.63
  6. Step 6: Final answer
    x = 259,296.61

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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.