Finding the Fourth Proportional to 209,319.14, 313,989.60 and 69,088.70
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Solution
The fourth proportional to 209,319.14, 313,989.60 and 69,088.70 is: 103,636.64
Step by Step Solution
- Step 1: Write the proportion equation
209,319.14 : 313,989.60 = 69,088.70 : x - Step 2: Convert to fraction form
209,319.14/313,989.60 = 69,088.70/x - Step 3: Cross multiply
209,319.14x = 313,989.60 × 69,088.70 - Step 4: Simplify right side
209,319.14x = 21,693,133,277.52 - Step 5: Solve for x
x = 21,693,133,277.52/209,319.14 - Step 6: Final answer
x = 103,636.64
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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.