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Finding the Fourth Proportional to 396,993.06, 547,852.45 and 215,705.46

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Solution

The fourth proportional to 396,993.06, 547,852.45 and 215,705.46 is: 297,674.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,993.06 : 547,852.45 = 215,705.46 : x
  2. Step 2: Convert to fraction form
    396,993.06/547,852.45 = 215,705.46/x
  3. Step 3: Cross multiply
    396,993.06x = 547,852.45 × 215,705.46
  4. Step 4: Simplify right side
    396,993.06x = 118,174,764,739.38
  5. Step 5: Solve for x
    x = 118,174,764,739.38/396,993.06
  6. Step 6: Final answer
    x = 297,674.64

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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.