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Finding the Fourth Proportional to 221,230.60, 331,449.90 and 134,518.60

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Solution

The fourth proportional to 221,230.60, 331,449.90 and 134,518.60 is: 201,537.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,230.60 : 331,449.90 = 134,518.60 : x
  2. Step 2: Convert to fraction form
    221,230.60/331,449.90 = 134,518.60/x
  3. Step 3: Cross multiply
    221,230.60x = 331,449.90 × 134,518.60
  4. Step 4: Simplify right side
    221,230.60x = 44,586,176,518.14
  5. Step 5: Solve for x
    x = 44,586,176,518.14/221,230.60
  6. Step 6: Final answer
    x = 201,537.11

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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.