Finding the Fourth Proportional to 286,838.40, 430,257.60 and 207,580.80
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Solution
The fourth proportional to 286,838.40, 430,257.60 and 207,580.80 is: 311,371.20
Step by Step Solution
- Step 1: Write the proportion equation
286,838.40 : 430,257.60 = 207,580.80 : x - Step 2: Convert to fraction form
286,838.40/430,257.60 = 207,580.80/x - Step 3: Cross multiply
286,838.40x = 430,257.60 × 207,580.80 - Step 4: Simplify right side
286,838.40x = 89,313,216,814.08 - Step 5: Solve for x
x = 89,313,216,814.08/286,838.40 - Step 6: Final answer
x = 311,371.20
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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.