Finding the Fourth Proportional to 207,904.90, 311,857.35 and 74,805.70
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Solution
The fourth proportional to 207,904.90, 311,857.35 and 74,805.70 is: 112,208.55
Step by Step Solution
- Step 1: Write the proportion equation
207,904.90 : 311,857.35 = 74,805.70 : x - Step 2: Convert to fraction form
207,904.90/311,857.35 = 74,805.70/x - Step 3: Cross multiply
207,904.90x = 311,857.35 × 74,805.70 - Step 4: Simplify right side
207,904.90x = 23,328,707,366.90 - Step 5: Solve for x
x = 23,328,707,366.90/207,904.90 - Step 6: Final answer
x = 112,208.55
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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.