Home / 210,869.26-290,999.22-115,375.78

Finding the Fourth Proportional to 210,869.26, 290,999.22 and 115,375.78

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Solution

The fourth proportional to 210,869.26, 290,999.22 and 115,375.78 is: 159,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,869.26 : 290,999.22 = 115,375.78 : x
  2. Step 2: Convert to fraction form
    210,869.26/290,999.22 = 115,375.78/x
  3. Step 3: Cross multiply
    210,869.26x = 290,999.22 × 115,375.78
  4. Step 4: Simplify right side
    210,869.26x = 33,574,261,986.89
  5. Step 5: Solve for x
    x = 33,574,261,986.89/210,869.26
  6. Step 6: Final answer
    x = 159,218.38

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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.