Finding the Fourth Proportional to 438,459,355.89, 605,073,897.99 and 240,228,369.09
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Solution
The fourth proportional to 438,459,355.89, 605,073,897.99 and 240,228,369.09 is: 331,515,142.15
Step by Step Solution
- Step 1: Write the proportion equation
438,459,355.89 : 605,073,897.99 = 240,228,369.09 : x - Step 2: Convert to fraction form
438,459,355.89/605,073,897.99 = 240,228,369.09/x - Step 3: Cross multiply
438,459,355.89x = 605,073,897.99 × 240,228,369.09 - Step 4: Simplify right side
438,459,355.89x = 145,355,915,693,066,720 - Step 5: Solve for x
x = 145,355,915,693,066,720/438,459,355.89 - Step 6: Final answer
x = 331,515,142.15
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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.