Finding the Fourth Proportional to 312,220.14, 430,571.36 and 207,258.46
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Solution
The fourth proportional to 312,220.14, 430,571.36 and 207,258.46 is: 285,822.55
Step by Step Solution
- Step 1: Write the proportion equation
312,220.14 : 430,571.36 = 207,258.46 : x - Step 2: Convert to fraction form
312,220.14/430,571.36 = 207,258.46/x - Step 3: Cross multiply
312,220.14x = 430,571.36 × 207,258.46 - Step 4: Simplify right side
312,220.14x = 89,239,556,993.71 - Step 5: Solve for x
x = 89,239,556,993.71/312,220.14 - Step 6: Final answer
x = 285,822.55
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1.5x scale
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.