Finding the Fourth Proportional to 420,137.74, 629,883.57 and 217,516.63
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Solution
The fourth proportional to 420,137.74, 629,883.57 and 217,516.63 is: 326,107.70
Step by Step Solution
- Step 1: Write the proportion equation
420,137.74 : 629,883.57 = 217,516.63 : x - Step 2: Convert to fraction form
420,137.74/629,883.57 = 217,516.63/x - Step 3: Cross multiply
420,137.74x = 629,883.57 × 217,516.63 - Step 4: Simplify right side
420,137.74x = 137,010,149,139.71 - Step 5: Solve for x
x = 137,010,149,139.71/420,137.74 - Step 6: Final answer
x = 326,107.70
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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.