Finding the Fourth Proportional to 378,955.44, 522,959.20 and 209,189.68
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Solution
The fourth proportional to 378,955.44, 522,959.20 and 209,189.68 is: 288,682.14
Step by Step Solution
- Step 1: Write the proportion equation
378,955.44 : 522,959.20 = 209,189.68 : x - Step 2: Convert to fraction form
378,955.44/522,959.20 = 209,189.68/x - Step 3: Cross multiply
378,955.44x = 522,959.20 × 209,189.68 - Step 4: Simplify right side
378,955.44x = 109,397,667,701.06 - Step 5: Solve for x
x = 109,397,667,701.06/378,955.44 - Step 6: Final answer
x = 288,682.14
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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.