Finding the Fourth Proportional to 290,440,209.20, 435,660,313.80 and 106,207,329.20
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Solution
The fourth proportional to 290,440,209.20, 435,660,313.80 and 106,207,329.20 is: 159,310,993.80
Step by Step Solution
- Step 1: Write the proportion equation
290,440,209.20 : 435,660,313.80 = 106,207,329.20 : x - Step 2: Convert to fraction form
290,440,209.20/435,660,313.80 = 106,207,329.20/x - Step 3: Cross multiply
290,440,209.20x = 435,660,313.80 × 106,207,329.20 - Step 4: Simplify right side
290,440,209.20x = 46,270,318,367,131,904 - Step 5: Solve for x
x = 46,270,318,367,131,904/290,440,209.20 - Step 6: Final answer
x = 159,310,993.80
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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.