Finding the Fourth Proportional to 245,165,654.80, 338,330,912.20 and 135,161,304.40
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Solution
The fourth proportional to 245,165,654.80, 338,330,912.20 and 135,161,304.40 is: 186,523,872.80
Step by Step Solution
- Step 1: Write the proportion equation
245,165,654.80 : 338,330,912.20 = 135,161,304.40 : x - Step 2: Convert to fraction form
245,165,654.80/338,330,912.20 = 135,161,304.40/x - Step 3: Cross multiply
245,165,654.80x = 338,330,912.20 × 135,161,304.40 - Step 4: Simplify right side
245,165,654.80x = 45,729,247,411,793,872 - Step 5: Solve for x
x = 45,729,247,411,793,872/245,165,654.80 - Step 6: Final answer
x = 186,523,872.80
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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.