Finding the Fourth Proportional to 208,638,176.80, 312,957,265.20 and 192,513,863.20
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Solution
The fourth proportional to 208,638,176.80, 312,957,265.20 and 192,513,863.20 is: 288,770,794.80
Step by Step Solution
- Step 1: Write the proportion equation
208,638,176.80 : 312,957,265.20 = 192,513,863.20 : x - Step 2: Convert to fraction form
208,638,176.80/312,957,265.20 = 192,513,863.20/x - Step 3: Cross multiply
208,638,176.80x = 312,957,265.20 × 192,513,863.20 - Step 4: Simplify right side
208,638,176.80x = 60,248,612,140,158,912 - Step 5: Solve for x
x = 60,248,612,140,158,912/208,638,176.80 - Step 6: Final answer
x = 288,770,794.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.