Finding the Fourth Proportional to 378,642.75, 522,490.68 and 208,865.94
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Solution
The fourth proportional to 378,642.75, 522,490.68 and 208,865.94 is: 288,214.96
Step by Step Solution
- Step 1: Write the proportion equation
378,642.75 : 522,490.68 = 208,865.94 : x - Step 2: Convert to fraction form
378,642.75/522,490.68 = 208,865.94/x - Step 3: Cross multiply
378,642.75x = 522,490.68 × 208,865.94 - Step 4: Simplify right side
378,642.75x = 109,130,505,060.10 - Step 5: Solve for x
x = 109,130,505,060.10/378,642.75 - Step 6: Final answer
x = 288,214.96
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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.