Home / 396,421.18-547,062.66-215,133.06

Finding the Fourth Proportional to 396,421.18, 547,062.66 and 215,133.06

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Solution

The fourth proportional to 396,421.18, 547,062.66 and 215,133.06 is: 296,884.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,421.18 : 547,062.66 = 215,133.06 : x
  2. Step 2: Convert to fraction form
    396,421.18/547,062.66 = 215,133.06/x
  3. Step 3: Cross multiply
    396,421.18x = 547,062.66 × 215,133.06
  4. Step 4: Simplify right side
    396,421.18x = 117,691,264,057.54
  5. Step 5: Solve for x
    x = 117,691,264,057.54/396,421.18
  6. Step 6: Final answer
    x = 296,884.40

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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.