Home / 281,128.44-421,422-103,538.60

Finding the Fourth Proportional to 281,128.44, 421,422 and 103,538.60

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Solution

The fourth proportional to 281,128.44, 421,422 and 103,538.60 is: 155,208.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,128.44 : 421,422 = 103,538.60 : x
  2. Step 2: Convert to fraction form
    281,128.44/421,422 = 103,538.60/x
  3. Step 3: Cross multiply
    281,128.44x = 421,422 × 103,538.60
  4. Step 4: Simplify right side
    281,128.44x = 43,633,443,889.20
  5. Step 5: Solve for x
    x = 43,633,443,889.20/281,128.44
  6. Step 6: Final answer
    x = 155,208.22

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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.