Finding the Fourth Proportional to 218,684.19, 328,129.97 and 130,112.67
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Solution
The fourth proportional to 218,684.19, 328,129.97 and 130,112.67 is: 195,230.69
Step by Step Solution
- Step 1: Write the proportion equation
218,684.19 : 328,129.97 = 130,112.67 : x - Step 2: Convert to fraction form
218,684.19/328,129.97 = 130,112.67/x - Step 3: Cross multiply
218,684.19x = 328,129.97 × 130,112.67 - Step 4: Simplify right side
218,684.19x = 42,693,865,853.16 - Step 5: Solve for x
x = 42,693,865,853.16/218,684.19 - Step 6: Final answer
x = 195,230.69
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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.