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Finding the Fourth Proportional to 355,938.79, 491,195.46 and 194,793.88

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Solution

The fourth proportional to 355,938.79, 491,195.46 and 194,793.88 is: 268,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,938.79 : 491,195.46 = 194,793.88 : x
  2. Step 2: Convert to fraction form
    355,938.79/491,195.46 = 194,793.88/x
  3. Step 3: Cross multiply
    355,938.79x = 491,195.46 × 194,793.88
  4. Step 4: Simplify right side
    355,938.79x = 95,681,869,491.78
  5. Step 5: Solve for x
    x = 95,681,869,491.78/355,938.79
  6. Step 6: Final answer
    x = 268,815.52

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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.