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Finding the Fourth Proportional to 355,908.48, 491,153.74 and 194,763.56

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Solution

The fourth proportional to 355,908.48, 491,153.74 and 194,763.56 is: 268,773.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,908.48 : 491,153.74 = 194,763.56 : x
  2. Step 2: Convert to fraction form
    355,908.48/491,153.74 = 194,763.56/x
  3. Step 3: Cross multiply
    355,908.48x = 491,153.74 × 194,763.56
  4. Step 4: Simplify right side
    355,908.48x = 95,658,850,909.71
  5. Step 5: Solve for x
    x = 95,658,850,909.71/355,908.48
  6. Step 6: Final answer
    x = 268,773.73

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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.