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Finding the Fourth Proportional to 443,828.64, 612,804.24 and 274,295.20

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Solution

The fourth proportional to 443,828.64, 612,804.24 and 274,295.20 is: 378,725.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,828.64 : 612,804.24 = 274,295.20 : x
  2. Step 2: Convert to fraction form
    443,828.64/612,804.24 = 274,295.20/x
  3. Step 3: Cross multiply
    443,828.64x = 612,804.24 × 274,295.20
  4. Step 4: Simplify right side
    443,828.64x = 168,089,261,571.65
  5. Step 5: Solve for x
    x = 168,089,261,571.65/443,828.64
  6. Step 6: Final answer
    x = 378,725.59

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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.