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Finding the Fourth Proportional to 356,079.95, 491,396.43 and 220,110.41

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Solution

The fourth proportional to 356,079.95, 491,396.43 and 220,110.41 is: 303,756.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,079.95 : 491,396.43 = 220,110.41 : x
  2. Step 2: Convert to fraction form
    356,079.95/491,396.43 = 220,110.41/x
  3. Step 3: Cross multiply
    356,079.95x = 491,396.43 × 220,110.41
  4. Step 4: Simplify right side
    356,079.95x = 108,161,467,222.85
  5. Step 5: Solve for x
    x = 108,161,467,222.85/356,079.95
  6. Step 6: Final answer
    x = 303,756.13

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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.