Finding the Fourth Proportional to 270,648.13, 405,861.21 and 81,041.71
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Solution
The fourth proportional to 270,648.13, 405,861.21 and 81,041.71 is: 121,529.33
Step by Step Solution
- Step 1: Write the proportion equation
270,648.13 : 405,861.21 = 81,041.71 : x - Step 2: Convert to fraction form
270,648.13/405,861.21 = 81,041.71/x - Step 3: Cross multiply
270,648.13x = 405,861.21 × 81,041.71 - Step 4: Simplify right side
270,648.13x = 32,891,686,481.07 - Step 5: Solve for x
x = 32,891,686,481.07/270,648.13 - Step 6: Final answer
x = 121,529.33
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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.