Home / 396,441.88-547,090.07-215,153.76

Finding the Fourth Proportional to 396,441.88, 547,090.07 and 215,153.76

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Solution

The fourth proportional to 396,441.88, 547,090.07 and 215,153.76 is: 296,912.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,441.88 : 547,090.07 = 215,153.76 : x
  2. Step 2: Convert to fraction form
    396,441.88/547,090.07 = 215,153.76/x
  3. Step 3: Cross multiply
    396,441.88x = 547,090.07 × 215,153.76
  4. Step 4: Simplify right side
    396,441.88x = 117,708,485,619.16
  5. Step 5: Solve for x
    x = 117,708,485,619.16/396,441.88
  6. Step 6: Final answer
    x = 296,912.34

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1.5x scale

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.