Finding the Fourth Proportional to 309,048.12, 426,471.66 and 189,793.08
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Solution
The fourth proportional to 309,048.12, 426,471.66 and 189,793.08 is: 261,905.39
Step by Step Solution
- Step 1: Write the proportion equation
309,048.12 : 426,471.66 = 189,793.08 : x - Step 2: Convert to fraction form
309,048.12/426,471.66 = 189,793.08/x - Step 3: Cross multiply
309,048.12x = 426,471.66 × 189,793.08 - Step 4: Simplify right side
309,048.12x = 80,941,369,884.11 - Step 5: Solve for x
x = 80,941,369,884.11/309,048.12 - Step 6: Final answer
x = 261,905.39
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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.