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Finding the Fourth Proportional to 263,345.40, 394,758.90 and 130,246.20

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Solution

The fourth proportional to 263,345.40, 394,758.90 and 130,246.20 is: 195,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,345.40 : 394,758.90 = 130,246.20 : x
  2. Step 2: Convert to fraction form
    263,345.40/394,758.90 = 130,246.20/x
  3. Step 3: Cross multiply
    263,345.40x = 394,758.90 × 130,246.20
  4. Step 4: Simplify right side
    263,345.40x = 51,415,846,641.18
  5. Step 5: Solve for x
    x = 51,415,846,641.18/263,345.40
  6. Step 6: Final answer
    x = 195,241.10

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