Finding the Fourth Proportional to 311,909.40, 467,864.10 and 292,226.40
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Solution
The fourth proportional to 311,909.40, 467,864.10 and 292,226.40 is: 438,339.60
Step by Step Solution
- Step 1: Write the proportion equation
311,909.40 : 467,864.10 = 292,226.40 : x - Step 2: Convert to fraction form
311,909.40/467,864.10 = 292,226.40/x - Step 3: Cross multiply
311,909.40x = 467,864.10 × 292,226.40 - Step 4: Simplify right side
311,909.40x = 136,722,241,632.24 - Step 5: Solve for x
x = 136,722,241,632.24/311,909.40 - Step 6: Final answer
x = 438,339.60
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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.