Finding the Fourth Proportional to 212,338.68, 318,497.40 and 79,208.52
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Solution
The fourth proportional to 212,338.68, 318,497.40 and 79,208.52 is: 118,808.82
Step by Step Solution
- Step 1: Write the proportion equation
212,338.68 : 318,497.40 = 79,208.52 : x - Step 2: Convert to fraction form
212,338.68/318,497.40 = 79,208.52/x - Step 3: Cross multiply
212,338.68x = 318,497.40 × 79,208.52 - Step 4: Simplify right side
212,338.68x = 25,227,707,677.85 - Step 5: Solve for x
x = 25,227,707,677.85/212,338.68 - Step 6: Final answer
x = 118,808.82
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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.