Home / 396,919.40-547,746.60-215,629.88

Finding the Fourth Proportional to 396,919.40, 547,746.60 and 215,629.88

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Solution

The fourth proportional to 396,919.40, 547,746.60 and 215,629.88 is: 297,568.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,919.40 : 547,746.60 = 215,629.88 : x
  2. Step 2: Convert to fraction form
    396,919.40/547,746.60 = 215,629.88/x
  3. Step 3: Cross multiply
    396,919.40x = 547,746.60 × 215,629.88
  4. Step 4: Simplify right side
    396,919.40x = 118,110,533,628.41
  5. Step 5: Solve for x
    x = 118,110,533,628.41/396,919.40
  6. Step 6: Final answer
    x = 297,568.05

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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.