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Finding the Fourth Proportional to 203,808.08, 305,564.50 and 102,668.45

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Solution

The fourth proportional to 203,808.08, 305,564.50 and 102,668.45 is: 153,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,808.08 : 305,564.50 = 102,668.45 : x
  2. Step 2: Convert to fraction form
    203,808.08/305,564.50 = 102,668.45/x
  3. Step 3: Cross multiply
    203,808.08x = 305,564.50 × 102,668.45
  4. Step 4: Simplify right side
    203,808.08x = 31,371,832,190.54
  5. Step 5: Solve for x
    x = 31,371,832,190.54/203,808.08
  6. Step 6: Final answer
    x = 153,928.30

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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.