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Finding the Fourth Proportional to 274,247.44, 378,453.90 and 153,388.96

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Solution

The fourth proportional to 274,247.44, 378,453.90 and 153,388.96 is: 211,672.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,247.44 : 378,453.90 = 153,388.96 : x
  2. Step 2: Convert to fraction form
    274,247.44/378,453.90 = 153,388.96/x
  3. Step 3: Cross multiply
    274,247.44x = 378,453.90 × 153,388.96
  4. Step 4: Simplify right side
    274,247.44x = 58,050,650,128.94
  5. Step 5: Solve for x
    x = 58,050,650,128.94/274,247.44
  6. Step 6: Final answer
    x = 211,672.53

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1.5x scale

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.