Finding the Fourth Proportional to 286,930.68, 430,392.51 and 129,047.64
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Solution
The fourth proportional to 286,930.68, 430,392.51 and 129,047.64 is: 193,569.88
Step by Step Solution
- Step 1: Write the proportion equation
286,930.68 : 430,392.51 = 129,047.64 : x - Step 2: Convert to fraction form
286,930.68/430,392.51 = 129,047.64/x - Step 3: Cross multiply
286,930.68x = 430,392.51 × 129,047.64 - Step 4: Simplify right side
286,930.68x = 55,541,137,689.18 - Step 5: Solve for x
x = 55,541,137,689.18/286,930.68 - Step 6: Final answer
x = 193,569.88
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1.5x scale
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.