Finding the Fourth Proportional to 278,867.25, 418,226.15 and 121,058.19
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Solution
The fourth proportional to 278,867.25, 418,226.15 and 121,058.19 is: 181,554.85
Step by Step Solution
- Step 1: Write the proportion equation
278,867.25 : 418,226.15 = 121,058.19 : x - Step 2: Convert to fraction form
278,867.25/418,226.15 = 121,058.19/x - Step 3: Cross multiply
278,867.25x = 418,226.15 × 121,058.19 - Step 4: Simplify right side
278,867.25x = 50,629,700,729.67 - Step 5: Solve for x
x = 50,629,700,729.67/278,867.25 - Step 6: Final answer
x = 181,554.85
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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.