Finding the Fourth Proportional to 207,957.20, 311,935.80 and 199,209.20
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Solution
The fourth proportional to 207,957.20, 311,935.80 and 199,209.20 is: 298,813.80
Step by Step Solution
- Step 1: Write the proportion equation
207,957.20 : 311,935.80 = 199,209.20 : x - Step 2: Convert to fraction form
207,957.20/311,935.80 = 199,209.20/x - Step 3: Cross multiply
207,957.20x = 311,935.80 × 199,209.20 - Step 4: Simplify right side
207,957.20x = 62,140,481,169.36 - Step 5: Solve for x
x = 62,140,481,169.36/207,957.20 - Step 6: Final answer
x = 298,813.80
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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.