Finding the Fourth Proportional to 312,472.68, 431,210.14 and 169,229.44
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Solution
The fourth proportional to 312,472.68, 431,210.14 and 169,229.44 is: 233,535.46
Step by Step Solution
- Step 1: Write the proportion equation
312,472.68 : 431,210.14 = 169,229.44 : x - Step 2: Convert to fraction form
312,472.68/431,210.14 = 169,229.44/x - Step 3: Cross multiply
312,472.68x = 431,210.14 × 169,229.44 - Step 4: Simplify right side
312,472.68x = 72,973,450,514.52 - Step 5: Solve for x
x = 72,973,450,514.52/312,472.68 - Step 6: Final answer
x = 233,535.46
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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.