Finding the Fourth Proportional to 213,029,857.20, 319,544,785.80 and 122,330,593.20
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Solution
The fourth proportional to 213,029,857.20, 319,544,785.80 and 122,330,593.20 is: 183,495,889.80
Step by Step Solution
- Step 1: Write the proportion equation
213,029,857.20 : 319,544,785.80 = 122,330,593.20 : x - Step 2: Convert to fraction form
213,029,857.20/319,544,785.80 = 122,330,593.20/x - Step 3: Cross multiply
213,029,857.20x = 319,544,785.80 × 122,330,593.20 - Step 4: Simplify right side
213,029,857.20x = 39,090,103,200,880,936 - Step 5: Solve for x
x = 39,090,103,200,880,936/213,029,857.20 - Step 6: Final answer
x = 183,495,889.80
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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.