Home / 396,984.36-547,840.66-215,697.76

Finding the Fourth Proportional to 396,984.36, 547,840.66 and 215,697.76

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Solution

The fourth proportional to 396,984.36, 547,840.66 and 215,697.76 is: 297,664.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,984.36 : 547,840.66 = 215,697.76 : x
  2. Step 2: Convert to fraction form
    396,984.36/547,840.66 = 215,697.76/x
  3. Step 3: Cross multiply
    396,984.36x = 547,840.66 × 215,697.76
  4. Step 4: Simplify right side
    396,984.36x = 118,168,003,198.92
  5. Step 5: Solve for x
    x = 118,168,003,198.92/396,984.36
  6. Step 6: Final answer
    x = 297,664.13

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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.