Finding the Fourth Proportional to 317,673,236.43, 438,253,080.12 and 198,388,740.74
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Solution
The fourth proportional to 317,673,236.43, 438,253,080.12 and 198,388,740.74 is: 273,691,538.09
Step by Step Solution
- Step 1: Write the proportion equation
317,673,236.43 : 438,253,080.12 = 198,388,740.74 : x - Step 2: Convert to fraction form
317,673,236.43/438,253,080.12 = 198,388,740.74/x - Step 3: Cross multiply
317,673,236.43x = 438,253,080.12 × 198,388,740.74 - Step 4: Simplify right side
317,673,236.43x = 86,944,476,688,241,872 - Step 5: Solve for x
x = 86,944,476,688,241,872/317,673,236.43 - Step 6: Final answer
x = 273,691,538.09
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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.