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Finding the Fourth Proportional to 203,523.85, 305,070.31 and 68,459.34

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Solution

The fourth proportional to 203,523.85, 305,070.31 and 68,459.34 is: 102,616.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,523.85 : 305,070.31 = 68,459.34 : x
  2. Step 2: Convert to fraction form
    203,523.85/305,070.31 = 68,459.34/x
  3. Step 3: Cross multiply
    203,523.85x = 305,070.31 × 68,459.34
  4. Step 4: Simplify right side
    203,523.85x = 20,884,912,076.20
  5. Step 5: Solve for x
    x = 20,884,912,076.20/203,523.85
  6. Step 6: Final answer
    x = 102,616.53

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1.5x scale

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.