Finding the Fourth Proportional to 270,612.16, 405,909.84 and 128,559.66
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Solution
The fourth proportional to 270,612.16, 405,909.84 and 128,559.66 is: 192,835.50
Step by Step Solution
- Step 1: Write the proportion equation
270,612.16 : 405,909.84 = 128,559.66 : x - Step 2: Convert to fraction form
270,612.16/405,909.84 = 128,559.66/x - Step 3: Cross multiply
270,612.16x = 405,909.84 × 128,559.66 - Step 4: Simplify right side
270,612.16x = 52,183,631,021.05 - Step 5: Solve for x
x = 52,183,631,021.05/270,612.16 - Step 6: Final answer
x = 192,835.50
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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.