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Finding the Fourth Proportional to 355,895.15, 491,135.19 and 194,750.15

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Solution

The fourth proportional to 355,895.15, 491,135.19 and 194,750.15 is: 268,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,895.15 : 491,135.19 = 194,750.15 : x
  2. Step 2: Convert to fraction form
    355,895.15/491,135.19 = 194,750.15/x
  3. Step 3: Cross multiply
    355,895.15x = 491,135.19 × 194,750.15
  4. Step 4: Simplify right side
    355,895.15x = 95,648,649,467.10
  5. Step 5: Solve for x
    x = 95,648,649,467.10/355,895.15
  6. Step 6: Final answer
    x = 268,755.14

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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.