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Finding the Fourth Proportional to 203,753.70, 305,696.96 and 102,499.49

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Solution

The fourth proportional to 203,753.70, 305,696.96 and 102,499.49 is: 153,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,753.70 : 305,696.96 = 102,499.49 : x
  2. Step 2: Convert to fraction form
    203,753.70/305,696.96 = 102,499.49/x
  3. Step 3: Cross multiply
    203,753.70x = 305,696.96 × 102,499.49
  4. Step 4: Simplify right side
    203,753.70x = 31,333,782,494.55
  5. Step 5: Solve for x
    x = 31,333,782,494.55/203,753.70
  6. Step 6: Final answer
    x = 153,782.64

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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.