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Finding the Fourth Proportional to 354,516.77, 489,234.68 and 193,375.28

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Solution

The fourth proportional to 354,516.77, 489,234.68 and 193,375.28 is: 266,858.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,516.77 : 489,234.68 = 193,375.28 : x
  2. Step 2: Convert to fraction form
    354,516.77/489,234.68 = 193,375.28/x
  3. Step 3: Cross multiply
    354,516.77x = 489,234.68 × 193,375.28
  4. Step 4: Simplify right side
    354,516.77x = 94,605,889,817.66
  5. Step 5: Solve for x
    x = 94,605,889,817.66/354,516.77
  6. Step 6: Final answer
    x = 266,858.72

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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.