Finding the Fourth Proportional to 278,894.11, 384,876.84 and 151,569.70
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Solution
The fourth proportional to 278,894.11, 384,876.84 and 151,569.70 is: 209,167.80
Step by Step Solution
- Step 1: Write the proportion equation
278,894.11 : 384,876.84 = 151,569.70 : x - Step 2: Convert to fraction form
278,894.11/384,876.84 = 151,569.70/x - Step 3: Cross multiply
278,894.11x = 384,876.84 × 151,569.70 - Step 4: Simplify right side
278,894.11x = 58,335,667,175.75 - Step 5: Solve for x
x = 58,335,667,175.75/278,894.11 - Step 6: Final answer
x = 209,167.80
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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.