Finding the Fourth Proportional to 208,809.42, 288,157.17 and 113,316.09
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Solution
The fourth proportional to 208,809.42, 288,157.17 and 113,316.09 is: 156,376.30
Step by Step Solution
- Step 1: Write the proportion equation
208,809.42 : 288,157.17 = 113,316.09 : x - Step 2: Convert to fraction form
208,809.42/288,157.17 = 113,316.09/x - Step 3: Cross multiply
208,809.42x = 288,157.17 × 113,316.09 - Step 4: Simplify right side
208,809.42x = 32,652,843,809.87 - Step 5: Solve for x
x = 32,652,843,809.87/208,809.42 - Step 6: Final answer
x = 156,376.30
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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.