Finding the Fourth Proportional to 270,614.16, 405,912.84 and 128,561.66
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Solution
The fourth proportional to 270,614.16, 405,912.84 and 128,561.66 is: 192,838.50
Step by Step Solution
- Step 1: Write the proportion equation
270,614.16 : 405,912.84 = 128,561.66 : x - Step 2: Convert to fraction form
270,614.16/405,912.84 = 128,561.66/x - Step 3: Cross multiply
270,614.16x = 405,912.84 × 128,561.66 - Step 4: Simplify right side
270,614.16x = 52,184,828,525.71 - Step 5: Solve for x
x = 52,184,828,525.71/270,614.16 - Step 6: Final answer
x = 192,838.50
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1.5x scale
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.