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Finding the Fourth Proportional to 355,356.73, 490,391.13 and 194,211.73

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Solution

The fourth proportional to 355,356.73, 490,391.13 and 194,211.73 is: 268,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,356.73 : 490,391.13 = 194,211.73 : x
  2. Step 2: Convert to fraction form
    355,356.73/490,391.13 = 194,211.73/x
  3. Step 3: Cross multiply
    355,356.73x = 490,391.13 × 194,211.73
  4. Step 4: Simplify right side
    355,356.73x = 95,239,709,733.95
  5. Step 5: Solve for x
    x = 95,239,709,733.95/355,356.73
  6. Step 6: Final answer
    x = 268,011.55

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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.