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Finding the Fourth Proportional to 263,365.40, 394,788.90 and 130,266.20

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Solution

The fourth proportional to 263,365.40, 394,788.90 and 130,266.20 is: 195,271.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,365.40 : 394,788.90 = 130,266.20 : x
  2. Step 2: Convert to fraction form
    263,365.40/394,788.90 = 130,266.20/x
  3. Step 3: Cross multiply
    263,365.40x = 394,788.90 × 130,266.20
  4. Step 4: Simplify right side
    263,365.40x = 51,427,649,805.18
  5. Step 5: Solve for x
    x = 51,427,649,805.18/263,365.40
  6. Step 6: Final answer
    x = 195,271.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.