Finding the Fourth Proportional to 320,728.68, 442,612.80 and 207,748.08
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Solution
The fourth proportional to 320,728.68, 442,612.80 and 207,748.08 is: 286,697.03
Step by Step Solution
- Step 1: Write the proportion equation
320,728.68 : 442,612.80 = 207,748.08 : x - Step 2: Convert to fraction form
320,728.68/442,612.80 = 207,748.08/x - Step 3: Cross multiply
320,728.68x = 442,612.80 × 207,748.08 - Step 4: Simplify right side
320,728.68x = 91,951,959,383.42 - Step 5: Solve for x
x = 91,951,959,383.42/320,728.68 - Step 6: Final answer
x = 286,697.03
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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.