Finding the Fourth Proportional to 207,547.80, 311,321.70 and 102,571.80
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Solution
The fourth proportional to 207,547.80, 311,321.70 and 102,571.80 is: 153,857.70
Step by Step Solution
- Step 1: Write the proportion equation
207,547.80 : 311,321.70 = 102,571.80 : x - Step 2: Convert to fraction form
207,547.80/311,321.70 = 102,571.80/x - Step 3: Cross multiply
207,547.80x = 311,321.70 × 102,571.80 - Step 4: Simplify right side
207,547.80x = 31,932,827,148.06 - Step 5: Solve for x
x = 31,932,827,148.06/207,547.80 - Step 6: Final answer
x = 153,857.70
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1.5x scale
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.