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Finding the Fourth Proportional to 355,531.87, 490,641.06 and 194,396.95

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Solution

The fourth proportional to 355,531.87, 490,641.06 and 194,396.95 is: 268,271.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,531.87 : 490,641.06 = 194,396.95 : x
  2. Step 2: Convert to fraction form
    355,531.87/490,641.06 = 194,396.95/x
  3. Step 3: Cross multiply
    355,531.87x = 490,641.06 × 194,396.95
  4. Step 4: Simplify right side
    355,531.87x = 95,379,125,608.77
  5. Step 5: Solve for x
    x = 95,379,125,608.77/355,531.87
  6. Step 6: Final answer
    x = 268,271.66

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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.