Finding the Fourth Proportional to 312,461.84, 431,194.92 and 169,221.44
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Solution
The fourth proportional to 312,461.84, 431,194.92 and 169,221.44 is: 233,524.28
Step by Step Solution
- Step 1: Write the proportion equation
312,461.84 : 431,194.92 = 169,221.44 : x - Step 2: Convert to fraction form
312,461.84/431,194.92 = 169,221.44/x - Step 3: Cross multiply
312,461.84x = 431,194.92 × 169,221.44 - Step 4: Simplify right side
312,461.84x = 72,967,425,283.08 - Step 5: Solve for x
x = 72,967,425,283.08/312,461.84 - Step 6: Final answer
x = 233,524.28
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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.