Finding the Fourth Proportional to 218,670.21, 301,774.08 and 121,874.11
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Solution
The fourth proportional to 218,670.21, 301,774.08 and 121,874.11 is: 168,191.39
Step by Step Solution
- Step 1: Write the proportion equation
218,670.21 : 301,774.08 = 121,874.11 : x - Step 2: Convert to fraction form
218,670.21/301,774.08 = 121,874.11/x - Step 3: Cross multiply
218,670.21x = 301,774.08 × 121,874.11 - Step 4: Simplify right side
218,670.21x = 36,778,447,421.07 - Step 5: Solve for x
x = 36,778,447,421.07/218,670.21 - Step 6: Final answer
x = 168,191.39
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.