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Finding the Fourth Proportional to 488,083.78, 673,562.78 and 281,238.13

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Solution

The fourth proportional to 488,083.78, 673,562.78 and 281,238.13 is: 388,112.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,083.78 : 673,562.78 = 281,238.13 : x
  2. Step 2: Convert to fraction form
    488,083.78/673,562.78 = 281,238.13/x
  3. Step 3: Cross multiply
    488,083.78x = 673,562.78 × 281,238.13
  4. Step 4: Simplify right side
    488,083.78x = 189,431,536,684.80
  5. Step 5: Solve for x
    x = 189,431,536,684.80/488,083.78
  6. Step 6: Final answer
    x = 388,112.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.