Finding the Fourth Proportional to 660,397.80, 990,596.70 and 161,761.80
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Solution
The fourth proportional to 660,397.80, 990,596.70 and 161,761.80 is: 242,642.70
Step by Step Solution
- Step 1: Write the proportion equation
660,397.80 : 990,596.70 = 161,761.80 : x - Step 2: Convert to fraction form
660,397.80/990,596.70 = 161,761.80/x - Step 3: Cross multiply
660,397.80x = 990,596.70 × 161,761.80 - Step 4: Simplify right side
660,397.80x = 160,240,705,266.06 - Step 5: Solve for x
x = 160,240,705,266.06/660,397.80 - Step 6: Final answer
x = 242,642.70
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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.