Home / 396,911.40-547,735.55-215,621.88

Finding the Fourth Proportional to 396,911.40, 547,735.55 and 215,621.88

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Solution

The fourth proportional to 396,911.40, 547,735.55 and 215,621.88 is: 297,557.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,911.40 : 547,735.55 = 215,621.88 : x
  2. Step 2: Convert to fraction form
    396,911.40/547,735.55 = 215,621.88/x
  3. Step 3: Cross multiply
    396,911.40x = 547,735.55 × 215,621.88
  4. Step 4: Simplify right side
    396,911.40x = 118,103,767,955.73
  5. Step 5: Solve for x
    x = 118,103,767,955.73/396,911.40
  6. Step 6: Final answer
    x = 297,557.01

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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.