Finding the Fourth Proportional to 407,992,209.44, 612,168,610.20 and 213,857,205.68
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Solution
The fourth proportional to 407,992,209.44, 612,168,610.20 and 213,857,205.68 is: 320,880,314.26
Step by Step Solution
- Step 1: Write the proportion equation
407,992,209.44 : 612,168,610.20 = 213,857,205.68 : x - Step 2: Convert to fraction form
407,992,209.44/612,168,610.20 = 213,857,205.68/x - Step 3: Cross multiply
407,992,209.44x = 612,168,610.20 × 213,857,205.68 - Step 4: Simplify right side
407,992,209.44x = 130,916,668,382,381,168 - Step 5: Solve for x
x = 130,916,668,382,381,168/407,992,209.44 - Step 6: Final answer
x = 320,880,314.26
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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.