Finding the Fourth Proportional to 612,109.20, 918,163.80 and 237,889.20
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Solution
The fourth proportional to 612,109.20, 918,163.80 and 237,889.20 is: 356,833.80
Step by Step Solution
- Step 1: Write the proportion equation
612,109.20 : 918,163.80 = 237,889.20 : x - Step 2: Convert to fraction form
612,109.20/918,163.80 = 237,889.20/x - Step 3: Cross multiply
612,109.20x = 918,163.80 × 237,889.20 - Step 4: Simplify right side
612,109.20x = 218,421,251,850.96 - Step 5: Solve for x
x = 218,421,251,850.96/612,109.20 - Step 6: Final answer
x = 356,833.80
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Similar ratio
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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.