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Finding the Fourth Proportional to 203,577.48, 305,388.90 and 70,469.64

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Solution

The fourth proportional to 203,577.48, 305,388.90 and 70,469.64 is: 105,712.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,577.48 : 305,388.90 = 70,469.64 : x
  2. Step 2: Convert to fraction form
    203,577.48/305,388.90 = 70,469.64/x
  3. Step 3: Cross multiply
    203,577.48x = 305,388.90 × 70,469.64
  4. Step 4: Simplify right side
    203,577.48x = 21,520,645,843.00
  5. Step 5: Solve for x
    x = 21,520,645,843.00/203,577.48
  6. Step 6: Final answer
    x = 105,712.31

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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.