Finding the Fourth Proportional to 212,483,019.96, 318,817,236.87 and 74,407,728.13
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Solution
The fourth proportional to 212,483,019.96, 318,817,236.87 and 74,407,728.13 is: 111,644,056.49
Step by Step Solution
- Step 1: Write the proportion equation
212,483,019.96 : 318,817,236.87 = 74,407,728.13 : x - Step 2: Convert to fraction form
212,483,019.96/318,817,236.87 = 74,407,728.13/x - Step 3: Cross multiply
212,483,019.96x = 318,817,236.87 × 74,407,728.13 - Step 4: Simplify right side
212,483,019.96x = 23,722,466,283,383,728 - Step 5: Solve for x
x = 23,722,466,283,383,728/212,483,019.96 - Step 6: Final answer
x = 111,644,056.49
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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.