Home / 396,416.06-547,054.54-215,128.02

Finding the Fourth Proportional to 396,416.06, 547,054.54 and 215,128.02

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Solution

The fourth proportional to 396,416.06, 547,054.54 and 215,128.02 is: 296,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,416.06 : 547,054.54 = 215,128.02 : x
  2. Step 2: Convert to fraction form
    396,416.06/547,054.54 = 215,128.02/x
  3. Step 3: Cross multiply
    396,416.06x = 547,054.54 × 215,128.02
  4. Step 4: Simplify right side
    396,416.06x = 117,686,760,022.21
  5. Step 5: Solve for x
    x = 117,686,760,022.21/396,416.06
  6. Step 6: Final answer
    x = 296,876.87

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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.