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Finding the Fourth Proportional to 274,307.67, 378,620.64 and 159,608.43

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Solution

The fourth proportional to 274,307.67, 378,620.64 and 159,608.43 is: 220,303.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,307.67 : 378,620.64 = 159,608.43 : x
  2. Step 2: Convert to fraction form
    274,307.67/378,620.64 = 159,608.43/x
  3. Step 3: Cross multiply
    274,307.67x = 378,620.64 × 159,608.43
  4. Step 4: Simplify right side
    274,307.67x = 60,431,045,916.00
  5. Step 5: Solve for x
    x = 60,431,045,916.00/274,307.67
  6. Step 6: Final answer
    x = 220,303.89

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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.