Finding the Fourth Proportional to 312,471.68, 431,208.77 and 169,228.44
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Solution
The fourth proportional to 312,471.68, 431,208.77 and 169,228.44 is: 233,534.08
Step by Step Solution
- Step 1: Write the proportion equation
312,471.68 : 431,208.77 = 169,228.44 : x - Step 2: Convert to fraction form
312,471.68/431,208.77 = 169,228.44/x - Step 3: Cross multiply
312,471.68x = 431,208.77 × 169,228.44 - Step 4: Simplify right side
312,471.68x = 72,972,786,615.28 - Step 5: Solve for x
x = 72,972,786,615.28/312,471.68 - Step 6: Final answer
x = 233,534.08
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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.