Finding the Fourth Proportional to 212,655.71, 318,972.97 and 79,526.18
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Solution
The fourth proportional to 212,655.71, 318,972.97 and 79,526.18 is: 119,285.31
Step by Step Solution
- Step 1: Write the proportion equation
212,655.71 : 318,972.97 = 79,526.18 : x - Step 2: Convert to fraction form
212,655.71/318,972.97 = 79,526.18/x - Step 3: Cross multiply
212,655.71x = 318,972.97 × 79,526.18 - Step 4: Simplify right side
212,655.71x = 25,366,702,425.97 - Step 5: Solve for x
x = 25,366,702,425.97/212,655.71 - Step 6: Final answer
x = 119,285.31
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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.