Finding the Fourth Proportional to 312,043.57, 430,618.83 and 168,803.26
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Solution
The fourth proportional to 312,043.57, 430,618.83 and 168,803.26 is: 232,947.80
Step by Step Solution
- Step 1: Write the proportion equation
312,043.57 : 430,618.83 = 168,803.26 : x - Step 2: Convert to fraction form
312,043.57/430,618.83 = 168,803.26/x - Step 3: Cross multiply
312,043.57x = 430,618.83 × 168,803.26 - Step 4: Simplify right side
312,043.57x = 72,689,862,321.39 - Step 5: Solve for x
x = 72,689,862,321.39/312,043.57 - Step 6: Final answer
x = 232,947.80
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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.