Finding the Fourth Proportional to 312,330,616.14, 430,764,930.24 and 274,573,048.80
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Solution
The fourth proportional to 312,330,616.14, 430,764,930.24 and 274,573,048.80 is: 378,689,869.32
Step by Step Solution
- Step 1: Write the proportion equation
312,330,616.14 : 430,764,930.24 = 274,573,048.80 : x - Step 2: Convert to fraction form
312,330,616.14/430,764,930.24 = 274,573,048.80/x - Step 3: Cross multiply
312,330,616.14x = 430,764,930.24 × 274,573,048.80 - Step 4: Simplify right side
312,330,616.14x = 118,276,440,212,116,128 - Step 5: Solve for x
x = 118,276,440,212,116,128/312,330,616.14 - Step 6: Final answer
x = 378,689,869.32
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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.