Finding the Fourth Proportional to 278,672.97, 384,573.11 and 157,810.98
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Solution
The fourth proportional to 278,672.97, 384,573.11 and 157,810.98 is: 217,781.65
Step by Step Solution
- Step 1: Write the proportion equation
278,672.97 : 384,573.11 = 157,810.98 : x - Step 2: Convert to fraction form
278,672.97/384,573.11 = 157,810.98/x - Step 3: Cross multiply
278,672.97x = 384,573.11 × 157,810.98 - Step 4: Simplify right side
278,672.97x = 60,689,858,581.69 - Step 5: Solve for x
x = 60,689,858,581.69/278,672.97 - Step 6: Final answer
x = 217,781.65
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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.