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Finding the Fourth Proportional to 494,415.45, 741,652.11 and 190,811.21

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Solution

The fourth proportional to 494,415.45, 741,652.11 and 190,811.21 is: 286,227.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,415.45 : 741,652.11 = 190,811.21 : x
  2. Step 2: Convert to fraction form
    494,415.45/741,652.11 = 190,811.21/x
  3. Step 3: Cross multiply
    494,415.45x = 741,652.11 × 190,811.21
  4. Step 4: Simplify right side
    494,415.45x = 141,515,532,799.89
  5. Step 5: Solve for x
    x = 141,515,532,799.89/494,415.45
  6. Step 6: Final answer
    x = 286,227.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.