Finding the Fourth Proportional to 391,286.80, 586,713.93 and 121,340.08
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Solution
The fourth proportional to 391,286.80, 586,713.93 and 121,340.08 is: 181,943.05
Step by Step Solution
- Step 1: Write the proportion equation
391,286.80 : 586,713.93 = 121,340.08 : x - Step 2: Convert to fraction form
391,286.80/586,713.93 = 121,340.08/x - Step 3: Cross multiply
391,286.80x = 586,713.93 × 121,340.08 - Step 4: Simplify right side
391,286.80x = 71,191,915,203.31 - Step 5: Solve for x
x = 71,191,915,203.31/391,286.80 - Step 6: Final answer
x = 181,943.05
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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.