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Finding the Fourth Proportional to 355,736.21, 491,041.05 and 219,874.37

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Solution

The fourth proportional to 355,736.21, 491,041.05 and 219,874.37 is: 303,503.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,736.21 : 491,041.05 = 219,874.37 : x
  2. Step 2: Convert to fraction form
    355,736.21/491,041.05 = 219,874.37/x
  3. Step 3: Cross multiply
    355,736.21x = 491,041.05 × 219,874.37
  4. Step 4: Simplify right side
    355,736.21x = 107,967,341,512.89
  5. Step 5: Solve for x
    x = 107,967,341,512.89/355,736.21
  6. Step 6: Final answer
    x = 303,503.94

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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.