Finding the Fourth Proportional to 312,432.62, 431,157.42 and 169,192.88
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Solution
The fourth proportional to 312,432.62, 431,157.42 and 169,192.88 is: 233,486.39
Step by Step Solution
- Step 1: Write the proportion equation
312,432.62 : 431,157.42 = 169,192.88 : x - Step 2: Convert to fraction form
312,432.62/431,157.42 = 169,192.88/x - Step 3: Cross multiply
312,432.62x = 431,157.42 × 169,192.88 - Step 4: Simplify right side
312,432.62x = 72,948,765,623.17 - Step 5: Solve for x
x = 72,948,765,623.17/312,432.62 - Step 6: Final answer
x = 233,486.39
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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.