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Finding the Fourth Proportional to 263,371.76, 394,987.12 and 73,821.48

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Solution

The fourth proportional to 263,371.76, 394,987.12 and 73,821.48 is: 110,712.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,371.76 : 394,987.12 = 73,821.48 : x
  2. Step 2: Convert to fraction form
    263,371.76/394,987.12 = 73,821.48/x
  3. Step 3: Cross multiply
    263,371.76x = 394,987.12 × 73,821.48
  4. Step 4: Simplify right side
    263,371.76x = 29,158,533,779.34
  5. Step 5: Solve for x
    x = 29,158,533,779.34/263,371.76
  6. Step 6: Final answer
    x = 110,712.45

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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.