Finding the Fourth Proportional to 212,636.88, 318,964.23 and 79,503.66
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Solution
The fourth proportional to 212,636.88, 318,964.23 and 79,503.66 is: 119,258.82
Step by Step Solution
- Step 1: Write the proportion equation
212,636.88 : 318,964.23 = 79,503.66 : x - Step 2: Convert to fraction form
212,636.88/318,964.23 = 79,503.66/x - Step 3: Cross multiply
212,636.88x = 318,964.23 × 79,503.66 - Step 4: Simplify right side
212,636.88x = 25,358,823,694.08 - Step 5: Solve for x
x = 25,358,823,694.08/212,636.88 - Step 6: Final answer
x = 119,258.82
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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.