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Finding the Fourth Proportional to 354,121.34, 488,687.45 and 192,976.53

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Solution

The fourth proportional to 354,121.34, 488,687.45 and 192,976.53 is: 266,307.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,121.34 : 488,687.45 = 192,976.53 : x
  2. Step 2: Convert to fraction form
    354,121.34/488,687.45 = 192,976.53/x
  3. Step 3: Cross multiply
    354,121.34x = 488,687.45 × 192,976.53
  4. Step 4: Simplify right side
    354,121.34x = 94,305,205,558.09
  5. Step 5: Solve for x
    x = 94,305,205,558.09/354,121.34
  6. Step 6: Final answer
    x = 266,307.61

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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.