Finding the Fourth Proportional to 206,365.19, 309,515.85 and 84,798.05
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Solution
The fourth proportional to 206,365.19, 309,515.85 and 84,798.05 is: 127,183.95
Step by Step Solution
- Step 1: Write the proportion equation
206,365.19 : 309,515.85 = 84,798.05 : x - Step 2: Convert to fraction form
206,365.19/309,515.85 = 84,798.05/x - Step 3: Cross multiply
206,365.19x = 309,515.85 × 84,798.05 - Step 4: Simplify right side
206,365.19x = 26,246,338,976.51 - Step 5: Solve for x
x = 26,246,338,976.51/206,365.19 - Step 6: Final answer
x = 127,183.95
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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.