Finding the Fourth Proportional to 339,943,399.20, 509,915,098.80 and 311,599,879.20
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Solution
The fourth proportional to 339,943,399.20, 509,915,098.80 and 311,599,879.20 is: 467,399,818.80
Step by Step Solution
- Step 1: Write the proportion equation
339,943,399.20 : 509,915,098.80 = 311,599,879.20 : x - Step 2: Convert to fraction form
339,943,399.20/509,915,098.80 = 311,599,879.20/x - Step 3: Cross multiply
339,943,399.20x = 509,915,098.80 × 311,599,879.20 - Step 4: Simplify right side
339,943,399.20x = 158,889,483,188,336,064 - Step 5: Solve for x
x = 158,889,483,188,336,064/339,943,399.20 - Step 6: Final answer
x = 467,399,818.80
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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.