Finding the Fourth Proportional to 212,924.72, 319,419.09 and 68,782.43
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Solution
The fourth proportional to 212,924.72, 319,419.09 and 68,782.43 is: 103,183.99
Step by Step Solution
- Step 1: Write the proportion equation
212,924.72 : 319,419.09 = 68,782.43 : x - Step 2: Convert to fraction form
212,924.72/319,419.09 = 68,782.43/x - Step 3: Cross multiply
212,924.72x = 319,419.09 × 68,782.43 - Step 4: Simplify right side
212,924.72x = 21,970,421,997.14 - Step 5: Solve for x
x = 21,970,421,997.14/212,924.72 - Step 6: Final answer
x = 103,183.99
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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.