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Finding the Fourth Proportional to 355,540.88, 490,653.48 and 194,405.96

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Solution

The fourth proportional to 355,540.88, 490,653.48 and 194,405.96 is: 268,284.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,540.88 : 490,653.48 = 194,405.96 : x
  2. Step 2: Convert to fraction form
    355,540.88/490,653.48 = 194,405.96/x
  3. Step 3: Cross multiply
    355,540.88x = 490,653.48 × 194,405.96
  4. Step 4: Simplify right side
    355,540.88x = 95,385,960,806.74
  5. Step 5: Solve for x
    x = 95,385,960,806.74/355,540.88
  6. Step 6: Final answer
    x = 268,284.09

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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.