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Finding the Fourth Proportional to 351,348.72, 484,861.40 and 190,203.78

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Solution

The fourth proportional to 351,348.72, 484,861.40 and 190,203.78 is: 262,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,348.72 : 484,861.40 = 190,203.78 : x
  2. Step 2: Convert to fraction form
    351,348.72/484,861.40 = 190,203.78/x
  3. Step 3: Cross multiply
    351,348.72x = 484,861.40 × 190,203.78
  4. Step 4: Simplify right side
    351,348.72x = 92,222,470,105.07
  5. Step 5: Solve for x
    x = 92,222,470,105.07/351,348.72
  6. Step 6: Final answer
    x = 262,481.30

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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.