Finding the Fourth Proportional to 203,012,672.81, 280,150,239.77 and 114,904,778.80
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Solution
The fourth proportional to 203,012,672.81, 280,150,239.77 and 114,904,778.80 is: 158,564,491.99
Step by Step Solution
- Step 1: Write the proportion equation
203,012,672.81 : 280,150,239.77 = 114,904,778.80 : x - Step 2: Convert to fraction form
203,012,672.81/280,150,239.77 = 114,904,778.80/x - Step 3: Cross multiply
203,012,672.81x = 280,150,239.77 × 114,904,778.80 - Step 4: Simplify right side
203,012,672.81x = 32,190,601,331,826,072 - Step 5: Solve for x
x = 32,190,601,331,826,072/203,012,672.81 - Step 6: Final answer
x = 158,564,491.99
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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.