Home / 396,443.58-547,092.40-215,155.46

Finding the Fourth Proportional to 396,443.58, 547,092.40 and 215,155.46

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Solution

The fourth proportional to 396,443.58, 547,092.40 and 215,155.46 is: 296,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,443.58 : 547,092.40 = 215,155.46 : x
  2. Step 2: Convert to fraction form
    396,443.58/547,092.40 = 215,155.46/x
  3. Step 3: Cross multiply
    396,443.58x = 547,092.40 × 215,155.46
  4. Step 4: Simplify right side
    396,443.58x = 117,709,916,984.50
  5. Step 5: Solve for x
    x = 117,709,916,984.50/396,443.58
  6. Step 6: Final answer
    x = 296,914.68

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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.