Finding the Fourth Proportional to 217,968.36, 326,950.44 and 129,157.93
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Solution
The fourth proportional to 217,968.36, 326,950.44 and 129,157.93 is: 193,735.65
Step by Step Solution
- Step 1: Write the proportion equation
217,968.36 : 326,950.44 = 129,157.93 : x - Step 2: Convert to fraction form
217,968.36/326,950.44 = 129,157.93/x - Step 3: Cross multiply
217,968.36x = 326,950.44 × 129,157.93 - Step 4: Simplify right side
217,968.36x = 42,228,242,042.99 - Step 5: Solve for x
x = 42,228,242,042.99/217,968.36 - Step 6: Final answer
x = 193,735.65
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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.