Finding the Fourth Proportional to 311,661,668.88, 430,105,763.16 and 172,430,163
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Solution
The fourth proportional to 311,661,668.88, 430,105,763.16 and 172,430,163 is: 237,960,629.28
Step by Step Solution
- Step 1: Write the proportion equation
311,661,668.88 : 430,105,763.16 = 172,430,163 : x - Step 2: Convert to fraction form
311,661,668.88/430,105,763.16 = 172,430,163/x - Step 3: Cross multiply
311,661,668.88x = 430,105,763.16 × 172,430,163 - Step 4: Simplify right side
311,661,668.88x = 74,163,206,848,918,192 - Step 5: Solve for x
x = 74,163,206,848,918,192/311,661,668.88 - Step 6: Final answer
x = 237,960,629.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.