Home / 858,104.82-1,287,164.96-218,409.24

Finding the Fourth Proportional to 858,104.82, 1,287,164.96 and 218,409.24

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Solution

The fourth proportional to 858,104.82, 1,287,164.96 and 218,409.24 is: 327,615.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,104.82 : 1,287,164.96 = 218,409.24 : x
  2. Step 2: Convert to fraction form
    858,104.82/1,287,164.96 = 218,409.24/x
  3. Step 3: Cross multiply
    858,104.82x = 1,287,164.96 × 218,409.24
  4. Step 4: Simplify right side
    858,104.82x = 281,128,725,222.09
  5. Step 5: Solve for x
    x = 281,128,725,222.09/858,104.82
  6. Step 6: Final answer
    x = 327,615.83

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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.