Home / 428,186.88-591,093.12-305,771.52

Finding the Fourth Proportional to 428,186.88, 591,093.12 and 305,771.52

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Solution

The fourth proportional to 428,186.88, 591,093.12 and 305,771.52 is: 422,104.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,186.88 : 591,093.12 = 305,771.52 : x
  2. Step 2: Convert to fraction form
    428,186.88/591,093.12 = 305,771.52/x
  3. Step 3: Cross multiply
    428,186.88x = 591,093.12 × 305,771.52
  4. Step 4: Simplify right side
    428,186.88x = 180,739,441,763.94
  5. Step 5: Solve for x
    x = 180,739,441,763.94/428,186.88
  6. Step 6: Final answer
    x = 422,104.11

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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.