Finding the Fourth Proportional to 309,964.26, 427,640.67 and 202,596.30
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Solution
The fourth proportional to 309,964.26, 427,640.67 and 202,596.30 is: 279,510.99
Step by Step Solution
- Step 1: Write the proportion equation
309,964.26 : 427,640.67 = 202,596.30 : x - Step 2: Convert to fraction form
309,964.26/427,640.67 = 202,596.30/x - Step 3: Cross multiply
309,964.26x = 427,640.67 × 202,596.30 - Step 4: Simplify right side
309,964.26x = 86,638,417,471.52 - Step 5: Solve for x
x = 86,638,417,471.52/309,964.26 - Step 6: Final answer
x = 279,510.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.