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Finding the Fourth Proportional to 355,878.42, 491,112.19 and 194,733.47

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Solution

The fourth proportional to 355,878.42, 491,112.19 and 194,733.47 is: 268,732.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,878.42 : 491,112.19 = 194,733.47 : x
  2. Step 2: Convert to fraction form
    355,878.42/491,112.19 = 194,733.47/x
  3. Step 3: Cross multiply
    355,878.42x = 491,112.19 × 194,733.47
  4. Step 4: Simplify right side
    355,878.42x = 95,635,982,389.20
  5. Step 5: Solve for x
    x = 95,635,982,389.20/355,878.42
  6. Step 6: Final answer
    x = 268,732.18

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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.