Finding the Fourth Proportional to 208,465.07, 287,780.98 and 139,672.99
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Solution
The fourth proportional to 208,465.07, 287,780.98 and 139,672.99 is: 192,815.18
Step by Step Solution
- Step 1: Write the proportion equation
208,465.07 : 287,780.98 = 139,672.99 : x - Step 2: Convert to fraction form
208,465.07/287,780.98 = 139,672.99/x - Step 3: Cross multiply
208,465.07x = 287,780.98 × 139,672.99 - Step 4: Simplify right side
208,465.07x = 40,195,229,941.73 - Step 5: Solve for x
x = 40,195,229,941.73/208,465.07 - Step 6: Final answer
x = 192,815.18
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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.