Finding the Fourth Proportional to 221,371,567.20, 331,161,555.60 and 194,497,711.20
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Solution
The fourth proportional to 221,371,567.20, 331,161,555.60 and 194,497,711.20 is: 290,959,518.50
Step by Step Solution
- Step 1: Write the proportion equation
221,371,567.20 : 331,161,555.60 = 194,497,711.20 : x - Step 2: Convert to fraction form
221,371,567.20/331,161,555.60 = 194,497,711.20/x - Step 3: Cross multiply
221,371,567.20x = 331,161,555.60 × 194,497,711.20 - Step 4: Simplify right side
221,371,567.20x = 64,410,164,601,631,544 - Step 5: Solve for x
x = 64,410,164,601,631,544/221,371,567.20 - Step 6: Final answer
x = 290,959,518.50
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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.