Finding the Fourth Proportional to 212,653.84, 318,970.16 and 79,524.31
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Solution
The fourth proportional to 212,653.84, 318,970.16 and 79,524.31 is: 119,282.50
Step by Step Solution
- Step 1: Write the proportion equation
212,653.84 : 318,970.16 = 79,524.31 : x - Step 2: Convert to fraction form
212,653.84/318,970.16 = 79,524.31/x - Step 3: Cross multiply
212,653.84x = 318,970.16 × 79,524.31 - Step 4: Simplify right side
212,653.84x = 25,365,881,884.59 - Step 5: Solve for x
x = 25,365,881,884.59/212,653.84 - Step 6: Final answer
x = 119,282.50
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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.