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Finding the Fourth Proportional to 203,511.90, 305,218.08 and 159,028.32

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Solution

The fourth proportional to 203,511.90, 305,218.08 and 159,028.32 is: 238,503.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,511.90 : 305,218.08 = 159,028.32 : x
  2. Step 2: Convert to fraction form
    203,511.90/305,218.08 = 159,028.32/x
  3. Step 3: Cross multiply
    203,511.90x = 305,218.08 × 159,028.32
  4. Step 4: Simplify right side
    203,511.90x = 48,538,318,496.03
  5. Step 5: Solve for x
    x = 48,538,318,496.03/203,511.90
  6. Step 6: Final answer
    x = 238,503.59

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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.