Finding the Fourth Proportional to 378,889.74, 522,865.26 and 209,123.82
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Solution
The fourth proportional to 378,889.74, 522,865.26 and 209,123.82 is: 288,589.45
Step by Step Solution
- Step 1: Write the proportion equation
378,889.74 : 522,865.26 = 209,123.82 : x - Step 2: Convert to fraction form
378,889.74/522,865.26 = 209,123.82/x - Step 3: Cross multiply
378,889.74x = 522,865.26 × 209,123.82 - Step 4: Simplify right side
378,889.74x = 109,343,580,516.49 - Step 5: Solve for x
x = 109,343,580,516.49/378,889.74 - Step 6: Final answer
x = 288,589.45
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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.