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Finding the Fourth Proportional to 263,010.40, 394,369.80 and 105,060.40

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Solution

The fourth proportional to 263,010.40, 394,369.80 and 105,060.40 is: 157,532.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,010.40 : 394,369.80 = 105,060.40 : x
  2. Step 2: Convert to fraction form
    263,010.40/394,369.80 = 105,060.40/x
  3. Step 3: Cross multiply
    263,010.40x = 394,369.80 × 105,060.40
  4. Step 4: Simplify right side
    263,010.40x = 41,432,648,935.92
  5. Step 5: Solve for x
    x = 41,432,648,935.92/263,010.40
  6. Step 6: Final answer
    x = 157,532.36

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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.