Finding the Fourth Proportional to 212,578.16, 318,885.58 and 54,805.28
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Solution
The fourth proportional to 212,578.16, 318,885.58 and 54,805.28 is: 82,212.65
Step by Step Solution
- Step 1: Write the proportion equation
212,578.16 : 318,885.58 = 54,805.28 : x - Step 2: Convert to fraction form
212,578.16/318,885.58 = 54,805.28/x - Step 3: Cross multiply
212,578.16x = 318,885.58 × 54,805.28 - Step 4: Simplify right side
212,578.16x = 17,476,613,499.86 - Step 5: Solve for x
x = 17,476,613,499.86/212,578.16 - Step 6: Final answer
x = 82,212.65
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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.