Finding the Fourth Proportional to 308,850,691.21, 463,275,645.58 and 78,819,781.03
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Solution
The fourth proportional to 308,850,691.21, 463,275,645.58 and 78,819,781.03 is: 118,229,571.70
Step by Step Solution
- Step 1: Write the proportion equation
308,850,691.21 : 463,275,645.58 = 78,819,781.03 : x - Step 2: Convert to fraction form
308,850,691.21/463,275,645.58 = 78,819,781.03/x - Step 3: Cross multiply
308,850,691.21x = 463,275,645.58 × 78,819,781.03 - Step 4: Simplify right side
308,850,691.21x = 36,515,284,942,693,752 - Step 5: Solve for x
x = 36,515,284,942,693,752/308,850,691.21 - Step 6: Final answer
x = 118,229,571.70
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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.