Finding the Fourth Proportional to 207,910.90, 311,866.35 and 74,811.70
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Solution
The fourth proportional to 207,910.90, 311,866.35 and 74,811.70 is: 112,217.55
Step by Step Solution
- Step 1: Write the proportion equation
207,910.90 : 311,866.35 = 74,811.70 : x - Step 2: Convert to fraction form
207,910.90/311,866.35 = 74,811.70/x - Step 3: Cross multiply
207,910.90x = 311,866.35 × 74,811.70 - Step 4: Simplify right side
207,910.90x = 23,331,251,816.30 - Step 5: Solve for x
x = 23,331,251,816.30/207,910.90 - Step 6: Final answer
x = 112,217.55
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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.