Finding the Fourth Proportional to 220,365.12, 304,085.84 and 129,706.68
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Solution
The fourth proportional to 220,365.12, 304,085.84 and 129,706.68 is: 178,984.61
Step by Step Solution
- Step 1: Write the proportion equation
220,365.12 : 304,085.84 = 129,706.68 : x - Step 2: Convert to fraction form
220,365.12/304,085.84 = 129,706.68/x - Step 3: Cross multiply
220,365.12x = 304,085.84 × 129,706.68 - Step 4: Simplify right side
220,365.12x = 39,441,964,092.88 - Step 5: Solve for x
x = 39,441,964,092.88/220,365.12 - Step 6: Final answer
x = 178,984.61
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.