Finding the Fourth Proportional to 290,331,806.80, 435,497,710.20 and 265,249,541.20
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Solution
The fourth proportional to 290,331,806.80, 435,497,710.20 and 265,249,541.20 is: 397,874,311.80
Step by Step Solution
- Step 1: Write the proportion equation
290,331,806.80 : 435,497,710.20 = 265,249,541.20 : x - Step 2: Convert to fraction form
290,331,806.80/435,497,710.20 = 265,249,541.20/x - Step 3: Cross multiply
290,331,806.80x = 435,497,710.20 × 265,249,541.20 - Step 4: Simplify right side
290,331,806.80x = 115,515,567,824,200,544 - Step 5: Solve for x
x = 115,515,567,824,200,544/290,331,806.80 - Step 6: Final answer
x = 397,874,311.80
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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.