Home / 285,380.10-428,074.32-135,635.67

Finding the Fourth Proportional to 285,380.10, 428,074.32 and 135,635.67

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Solution

The fourth proportional to 285,380.10, 428,074.32 and 135,635.67 is: 203,455.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,380.10 : 428,074.32 = 135,635.67 : x
  2. Step 2: Convert to fraction form
    285,380.10/428,074.32 = 135,635.67/x
  3. Step 3: Cross multiply
    285,380.10x = 428,074.32 × 135,635.67
  4. Step 4: Simplify right side
    285,380.10x = 58,062,147,202.99
  5. Step 5: Solve for x
    x = 58,062,147,202.99/285,380.10
  6. Step 6: Final answer
    x = 203,455.49

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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.