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Finding the Fourth Proportional to 203,588.34, 305,481.84 and 143,999.67

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Solution

The fourth proportional to 203,588.34, 305,481.84 and 143,999.67 is: 216,069.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,588.34 : 305,481.84 = 143,999.67 : x
  2. Step 2: Convert to fraction form
    203,588.34/305,481.84 = 143,999.67/x
  3. Step 3: Cross multiply
    203,588.34x = 305,481.84 × 143,999.67
  4. Step 4: Simplify right side
    203,588.34x = 43,989,284,150.99
  5. Step 5: Solve for x
    x = 43,989,284,150.99/203,588.34
  6. Step 6: Final answer
    x = 216,069.76

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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.