Finding the Fourth Proportional to 278,745.36, 418,177.44 and 79,126.80
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Solution
The fourth proportional to 278,745.36, 418,177.44 and 79,126.80 is: 118,707.06
Step by Step Solution
- Step 1: Write the proportion equation
278,745.36 : 418,177.44 = 79,126.80 : x - Step 2: Convert to fraction form
278,745.36/418,177.44 = 79,126.80/x - Step 3: Cross multiply
278,745.36x = 418,177.44 × 79,126.80 - Step 4: Simplify right side
278,745.36x = 33,089,042,659.39 - Step 5: Solve for x
x = 33,089,042,659.39/278,745.36 - Step 6: Final answer
x = 118,707.06
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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.