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Finding the Fourth Proportional to 396,067.70, 591,203.76 and 340,266.40

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Solution

The fourth proportional to 396,067.70, 591,203.76 and 340,266.40 is: 507,910.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,067.70 : 591,203.76 = 340,266.40 : x
  2. Step 2: Convert to fraction form
    396,067.70/591,203.76 = 340,266.40/x
  3. Step 3: Cross multiply
    396,067.70x = 591,203.76 × 340,266.40
  4. Step 4: Simplify right side
    396,067.70x = 201,166,775,081.66
  5. Step 5: Solve for x
    x = 201,166,775,081.66/396,067.70
  6. Step 6: Final answer
    x = 507,910.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.