Finding the Fourth Proportional to 208,407.91, 287,498.05 and 136,777.99
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Solution
The fourth proportional to 208,407.91, 287,498.05 and 136,777.99 is: 188,684.80
Step by Step Solution
- Step 1: Write the proportion equation
208,407.91 : 287,498.05 = 136,777.99 : x - Step 2: Convert to fraction form
208,407.91/287,498.05 = 136,777.99/x - Step 3: Cross multiply
208,407.91x = 287,498.05 × 136,777.99 - Step 4: Simplify right side
208,407.91x = 39,323,405,407.92 - Step 5: Solve for x
x = 39,323,405,407.92/208,407.91 - Step 6: Final answer
x = 188,684.80
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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.