Finding the Fourth Proportional to 378,917.60, 522,903.44 and 209,151.68
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Solution
The fourth proportional to 378,917.60, 522,903.44 and 209,151.68 is: 288,627.75
Step by Step Solution
- Step 1: Write the proportion equation
378,917.60 : 522,903.44 = 209,151.68 : x - Step 2: Convert to fraction form
378,917.60/522,903.44 = 209,151.68/x - Step 3: Cross multiply
378,917.60x = 522,903.44 × 209,151.68 - Step 4: Simplify right side
378,917.60x = 109,366,132,953.78 - Step 5: Solve for x
x = 109,366,132,953.78/378,917.60 - Step 6: Final answer
x = 288,627.75
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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.