Finding the Fourth Proportional to 206,781.70, 310,226.55 and 66,543.70
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Solution
The fourth proportional to 206,781.70, 310,226.55 and 66,543.70 is: 99,832.93
Step by Step Solution
- Step 1: Write the proportion equation
206,781.70 : 310,226.55 = 66,543.70 : x - Step 2: Convert to fraction form
206,781.70/310,226.55 = 66,543.70/x - Step 3: Cross multiply
206,781.70x = 310,226.55 × 66,543.70 - Step 4: Simplify right side
206,781.70x = 20,643,622,475.24 - Step 5: Solve for x
x = 20,643,622,475.24/206,781.70 - Step 6: Final answer
x = 99,832.93
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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.