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Finding the Fourth Proportional to 203,445.60, 305,168.40 and 202,279.20

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Solution

The fourth proportional to 203,445.60, 305,168.40 and 202,279.20 is: 303,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,445.60 : 305,168.40 = 202,279.20 : x
  2. Step 2: Convert to fraction form
    203,445.60/305,168.40 = 202,279.20/x
  3. Step 3: Cross multiply
    203,445.60x = 305,168.40 × 202,279.20
  4. Step 4: Simplify right side
    203,445.60x = 61,729,219,817.28
  5. Step 5: Solve for x
    x = 61,729,219,817.28/203,445.60
  6. Step 6: Final answer
    x = 303,418.80

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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.