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Finding the Fourth Proportional to 203,985.72, 305,978.52 and 63,744.36

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Solution

The fourth proportional to 203,985.72, 305,978.52 and 63,744.36 is: 95,616.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,985.72 : 305,978.52 = 63,744.36 : x
  2. Step 2: Convert to fraction form
    203,985.72/305,978.52 = 63,744.36/x
  3. Step 3: Cross multiply
    203,985.72x = 305,978.52 × 63,744.36
  4. Step 4: Simplify right side
    203,985.72x = 19,504,404,931.15
  5. Step 5: Solve for x
    x = 19,504,404,931.15/203,985.72
  6. Step 6: Final answer
    x = 95,616.52

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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.