Finding the Fourth Proportional to 207,497.80, 311,246.70 and 102,521.80
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Solution
The fourth proportional to 207,497.80, 311,246.70 and 102,521.80 is: 153,782.70
Step by Step Solution
- Step 1: Write the proportion equation
207,497.80 : 311,246.70 = 102,521.80 : x - Step 2: Convert to fraction form
207,497.80/311,246.70 = 102,521.80/x - Step 3: Cross multiply
207,497.80x = 311,246.70 × 102,521.80 - Step 4: Simplify right side
207,497.80x = 31,909,571,928.06 - Step 5: Solve for x
x = 31,909,571,928.06/207,497.80 - Step 6: Final answer
x = 153,782.70
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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.