Finding the Fourth Proportional to 343,860,107.20, 515,790,160.80 and 312,115,364.80
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Solution
The fourth proportional to 343,860,107.20, 515,790,160.80 and 312,115,364.80 is: 468,173,047.20
Step by Step Solution
- Step 1: Write the proportion equation
343,860,107.20 : 515,790,160.80 = 312,115,364.80 : x - Step 2: Convert to fraction form
343,860,107.20/515,790,160.80 = 312,115,364.80/x - Step 3: Cross multiply
343,860,107.20x = 515,790,160.80 × 312,115,364.80 - Step 4: Simplify right side
343,860,107.20x = 160,986,034,198,342,656 - Step 5: Solve for x
x = 160,986,034,198,342,656/343,860,107.20 - Step 6: Final answer
x = 468,173,047.20
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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.