Finding the Fourth Proportional to 312,230.40, 430,585.50 and 207,268.71
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Solution
The fourth proportional to 312,230.40, 430,585.50 and 207,268.71 is: 285,836.68
Step by Step Solution
- Step 1: Write the proportion equation
312,230.40 : 430,585.50 = 207,268.71 : x - Step 2: Convert to fraction form
312,230.40/430,585.50 = 207,268.71/x - Step 3: Cross multiply
312,230.40x = 430,585.50 × 207,268.71 - Step 4: Simplify right side
312,230.40x = 89,246,901,129.71 - Step 5: Solve for x
x = 89,246,901,129.71/312,230.40 - Step 6: Final answer
x = 285,836.68
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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.