Home / 396,474.48-547,135.29-215,186.39

Finding the Fourth Proportional to 396,474.48, 547,135.29 and 215,186.39

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Solution

The fourth proportional to 396,474.48, 547,135.29 and 215,186.39 is: 296,957.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,474.48 : 547,135.29 = 215,186.39 : x
  2. Step 2: Convert to fraction form
    396,474.48/547,135.29 = 215,186.39/x
  3. Step 3: Cross multiply
    396,474.48x = 547,135.29 × 215,186.39
  4. Step 4: Simplify right side
    396,474.48x = 117,736,065,161.03
  5. Step 5: Solve for x
    x = 117,736,065,161.03/396,474.48
  6. Step 6: Final answer
    x = 296,957.49

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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.