Finding the Fourth Proportional to 306,343.80, 422,750.70 and 172,207.80
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Solution
The fourth proportional to 306,343.80, 422,750.70 and 172,207.80 is: 237,644.66
Step by Step Solution
- Step 1: Write the proportion equation
306,343.80 : 422,750.70 = 172,207.80 : x - Step 2: Convert to fraction form
306,343.80/422,750.70 = 172,207.80/x - Step 3: Cross multiply
306,343.80x = 422,750.70 × 172,207.80 - Step 4: Simplify right side
306,343.80x = 72,800,967,995.46 - Step 5: Solve for x
x = 72,800,967,995.46/306,343.80 - Step 6: Final answer
x = 237,644.66
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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.