Finding the Fourth Proportional to 280,651,638.45, 420,339,728.48 and 177,339,508.05
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Solution
The fourth proportional to 280,651,638.45, 420,339,728.48 and 177,339,508.05 is: 265,606,290.68
Step by Step Solution
- Step 1: Write the proportion equation
280,651,638.45 : 420,339,728.48 = 177,339,508.05 : x - Step 2: Convert to fraction form
280,651,638.45/420,339,728.48 = 177,339,508.05/x - Step 3: Cross multiply
280,651,638.45x = 420,339,728.48 × 177,339,508.05 - Step 4: Simplify right side
280,651,638.45x = 74,542,840,661,627,088 - Step 5: Solve for x
x = 74,542,840,661,627,088/280,651,638.45 - Step 6: Final answer
x = 265,606,290.68
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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.