Finding the Fourth Proportional to 312,638.74, 431,441.84 and 169,398.68
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Solution
The fourth proportional to 312,638.74, 431,441.84 and 169,398.68 is: 233,770.38
Step by Step Solution
- Step 1: Write the proportion equation
312,638.74 : 431,441.84 = 169,398.68 : x - Step 2: Convert to fraction form
312,638.74/431,441.84 = 169,398.68/x - Step 3: Cross multiply
312,638.74x = 431,441.84 × 169,398.68 - Step 4: Simplify right side
312,638.74x = 73,085,676,459.06 - Step 5: Solve for x
x = 73,085,676,459.06/312,638.74 - Step 6: Final answer
x = 233,770.38
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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.