Finding the Fourth Proportional to 312,455.57, 430,866.20 and 267,283.08
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Solution
The fourth proportional to 312,455.57, 430,866.20 and 267,283.08 is: 368,574.79
Step by Step Solution
- Step 1: Write the proportion equation
312,455.57 : 430,866.20 = 267,283.08 : x - Step 2: Convert to fraction form
312,455.57/430,866.20 = 267,283.08/x - Step 3: Cross multiply
312,455.57x = 430,866.20 × 267,283.08 - Step 4: Simplify right side
312,455.57x = 115,163,245,672.10 - Step 5: Solve for x
x = 115,163,245,672.10/312,455.57 - Step 6: Final answer
x = 368,574.79
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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.