Finding the Fourth Proportional to 215,826,913.80, 323,740,370.70 and 193,152,097.80
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Solution
The fourth proportional to 215,826,913.80, 323,740,370.70 and 193,152,097.80 is: 289,728,146.70
Step by Step Solution
- Step 1: Write the proportion equation
215,826,913.80 : 323,740,370.70 = 193,152,097.80 : x - Step 2: Convert to fraction form
215,826,913.80/323,740,370.70 = 193,152,097.80/x - Step 3: Cross multiply
215,826,913.80x = 323,740,370.70 × 193,152,097.80 - Step 4: Simplify right side
215,826,913.80x = 62,531,131,743,254,656 - Step 5: Solve for x
x = 62,531,131,743,254,656/215,826,913.80 - Step 6: Final answer
x = 289,728,146.70
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1.5x scale
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.