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Finding the Fourth Proportional to 203,390.90, 305,083.08 and 63,149.66

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Solution

The fourth proportional to 203,390.90, 305,083.08 and 63,149.66 is: 94,723.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,390.90 : 305,083.08 = 63,149.66 : x
  2. Step 2: Convert to fraction form
    203,390.90/305,083.08 = 63,149.66/x
  3. Step 3: Cross multiply
    203,390.90x = 305,083.08 × 63,149.66
  4. Step 4: Simplify right side
    203,390.90x = 19,265,892,773.75
  5. Step 5: Solve for x
    x = 19,265,892,773.75/203,390.90
  6. Step 6: Final answer
    x = 94,723.47

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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.