Finding the Fourth Proportional to 378,875.70, 522,845.88 and 209,109.82
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Solution
The fourth proportional to 378,875.70, 522,845.88 and 209,109.82 is: 288,570.12
Step by Step Solution
- Step 1: Write the proportion equation
378,875.70 : 522,845.88 = 209,109.82 : x - Step 2: Convert to fraction form
378,875.70/522,845.88 = 209,109.82/x - Step 3: Cross multiply
378,875.70x = 522,845.88 × 209,109.82 - Step 4: Simplify right side
378,875.70x = 109,332,207,854.54 - Step 5: Solve for x
x = 109,332,207,854.54/378,875.70 - Step 6: Final answer
x = 288,570.12
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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.