Home / 396,501.11-547,172.09-215,213.07

Finding the Fourth Proportional to 396,501.11, 547,172.09 and 215,213.07

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Solution

The fourth proportional to 396,501.11, 547,172.09 and 215,213.07 is: 296,994.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,501.11 : 547,172.09 = 215,213.07 : x
  2. Step 2: Convert to fraction form
    396,501.11/547,172.09 = 215,213.07/x
  3. Step 3: Cross multiply
    396,501.11x = 547,172.09 × 215,213.07
  4. Step 4: Simplify right side
    396,501.11x = 117,758,584,231.15
  5. Step 5: Solve for x
    x = 117,758,584,231.15/396,501.11
  6. Step 6: Final answer
    x = 296,994.34

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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.