Finding the Fourth Proportional to 208,975.35, 288,431.91 and 137,362.05
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Solution
The fourth proportional to 208,975.35, 288,431.91 and 137,362.05 is: 189,589.82
Step by Step Solution
- Step 1: Write the proportion equation
208,975.35 : 288,431.91 = 137,362.05 : x - Step 2: Convert to fraction form
208,975.35/288,431.91 = 137,362.05/x - Step 3: Cross multiply
208,975.35x = 288,431.91 × 137,362.05 - Step 4: Simplify right side
208,975.35x = 39,619,598,443.02 - Step 5: Solve for x
x = 39,619,598,443.02/208,975.35 - Step 6: Final answer
x = 189,589.82
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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.