Finding the Fourth Proportional to 410,305.20, 615,515.40 and 129,793.20
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Solution
The fourth proportional to 410,305.20, 615,515.40 and 129,793.20 is: 194,708.02
Step by Step Solution
- Step 1: Write the proportion equation
410,305.20 : 615,515.40 = 129,793.20 : x - Step 2: Convert to fraction form
410,305.20/615,515.40 = 129,793.20/x - Step 3: Cross multiply
410,305.20x = 615,515.40 × 129,793.20 - Step 4: Simplify right side
410,305.20x = 79,889,713,415.28 - Step 5: Solve for x
x = 79,889,713,415.28/410,305.20 - Step 6: Final answer
x = 194,708.02
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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.