Finding the Fourth Proportional to 371,909.22, 513,238.11 and 202,143.75
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Solution
The fourth proportional to 371,909.22, 513,238.11 and 202,143.75 is: 278,960.22
Step by Step Solution
- Step 1: Write the proportion equation
371,909.22 : 513,238.11 = 202,143.75 : x - Step 2: Convert to fraction form
371,909.22/513,238.11 = 202,143.75/x - Step 3: Cross multiply
371,909.22x = 513,238.11 × 202,143.75 - Step 4: Simplify right side
371,909.22x = 103,747,876,198.31 - Step 5: Solve for x
x = 103,747,876,198.31/371,909.22 - Step 6: Final answer
x = 278,960.22
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1.5x scale
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.