Finding the Fourth Proportional to 215,812,823.80, 323,719,235.70 and 193,138,007.80
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Solution
The fourth proportional to 215,812,823.80, 323,719,235.70 and 193,138,007.80 is: 289,707,011.70
Step by Step Solution
- Step 1: Write the proportion equation
215,812,823.80 : 323,719,235.70 = 193,138,007.80 : x - Step 2: Convert to fraction form
215,812,823.80/323,719,235.70 = 193,138,007.80/x - Step 3: Cross multiply
215,812,823.80x = 323,719,235.70 × 193,138,007.80 - Step 4: Simplify right side
215,812,823.80x = 62,522,488,269,636,640 - Step 5: Solve for x
x = 62,522,488,269,636,640/215,812,823.80 - Step 6: Final answer
x = 289,707,011.70
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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.