Finding the Fourth Proportional to 442,818.70, 664,228.05 and 218,213.80
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Solution
The fourth proportional to 442,818.70, 664,228.05 and 218,213.80 is: 327,320.70
Step by Step Solution
- Step 1: Write the proportion equation
442,818.70 : 664,228.05 = 218,213.80 : x - Step 2: Convert to fraction form
442,818.70/664,228.05 = 218,213.80/x - Step 3: Cross multiply
442,818.70x = 664,228.05 × 218,213.80 - Step 4: Simplify right side
442,818.70x = 144,943,726,857.09 - Step 5: Solve for x
x = 144,943,726,857.09/442,818.70 - Step 6: Final answer
x = 327,320.70
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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.