Finding the Fourth Proportional to 261,468,341.20, 392,202,511.80 and 159,431,669.20
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Solution
The fourth proportional to 261,468,341.20, 392,202,511.80 and 159,431,669.20 is: 239,147,503.80
Step by Step Solution
- Step 1: Write the proportion equation
261,468,341.20 : 392,202,511.80 = 159,431,669.20 : x - Step 2: Convert to fraction form
261,468,341.20/392,202,511.80 = 159,431,669.20/x - Step 3: Cross multiply
261,468,341.20x = 392,202,511.80 × 159,431,669.20 - Step 4: Simplify right side
261,468,341.20x = 62,529,501,120,706,696 - Step 5: Solve for x
x = 62,529,501,120,706,696/261,468,341.20 - Step 6: Final answer
x = 239,147,503.80
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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.