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Finding the Fourth Proportional to 396,603.96, 547,526.82 and 305,760.84

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Solution

The fourth proportional to 396,603.96, 547,526.82 and 305,760.84 is: 422,114.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,603.96 : 547,526.82 = 305,760.84 : x
  2. Step 2: Convert to fraction form
    396,603.96/547,526.82 = 305,760.84/x
  3. Step 3: Cross multiply
    396,603.96x = 547,526.82 × 305,760.84
  4. Step 4: Simplify right side
    396,603.96x = 167,412,260,405.73
  5. Step 5: Solve for x
    x = 167,412,260,405.73/396,603.96
  6. Step 6: Final answer
    x = 422,114.44

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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.