Finding the Fourth Proportional to 410,305.95, 615,397.37 and 129,786.75
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Solution
The fourth proportional to 410,305.95, 615,397.37 and 129,786.75 is: 194,660.65
Step by Step Solution
- Step 1: Write the proportion equation
410,305.95 : 615,397.37 = 129,786.75 : x - Step 2: Convert to fraction form
410,305.95/615,397.37 = 129,786.75/x - Step 3: Cross multiply
410,305.95x = 615,397.37 × 129,786.75 - Step 4: Simplify right side
410,305.95x = 79,870,423,961.91 - Step 5: Solve for x
x = 79,870,423,961.91/410,305.95 - Step 6: Final answer
x = 194,660.65
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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.