Finding the Fourth Proportional to 278,894.36, 384,859.46 and 158,037.09
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Solution
The fourth proportional to 278,894.36, 384,859.46 and 158,037.09 is: 218,082.82
Step by Step Solution
- Step 1: Write the proportion equation
278,894.36 : 384,859.46 = 158,037.09 : x - Step 2: Convert to fraction form
278,894.36/384,859.46 = 158,037.09/x - Step 3: Cross multiply
278,894.36x = 384,859.46 × 158,037.09 - Step 4: Simplify right side
278,894.36x = 60,822,068,327.19 - Step 5: Solve for x
x = 60,822,068,327.19/278,894.36 - Step 6: Final answer
x = 218,082.82
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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.