Finding the Fourth Proportional to 208,430.16, 287,732.79 and 139,638.08
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Solution
The fourth proportional to 208,430.16, 287,732.79 and 139,638.08 is: 192,766.99
Step by Step Solution
- Step 1: Write the proportion equation
208,430.16 : 287,732.79 = 139,638.08 : x - Step 2: Convert to fraction form
208,430.16/287,732.79 = 139,638.08/x - Step 3: Cross multiply
208,430.16x = 287,732.79 × 139,638.08 - Step 4: Simplify right side
208,430.16x = 40,178,454,348.64 - Step 5: Solve for x
x = 40,178,454,348.64/208,430.16 - Step 6: Final answer
x = 192,766.99
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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.