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Finding the Fourth Proportional to 203,539.34, 280,847.98 and 122,912.89

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Solution

The fourth proportional to 203,539.34, 280,847.98 and 122,912.89 is: 169,597.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,539.34 : 280,847.98 = 122,912.89 : x
  2. Step 2: Convert to fraction form
    203,539.34/280,847.98 = 122,912.89/x
  3. Step 3: Cross multiply
    203,539.34x = 280,847.98 × 122,912.89
  4. Step 4: Simplify right side
    203,539.34x = 34,519,836,872.46
  5. Step 5: Solve for x
    x = 34,519,836,872.46/203,539.34
  6. Step 6: Final answer
    x = 169,597.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.