Finding the Fourth Proportional to 218,919.75, 302,109.30 and 118,317.75
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Solution
The fourth proportional to 218,919.75, 302,109.30 and 118,317.75 is: 163,278.52
Step by Step Solution
- Step 1: Write the proportion equation
218,919.75 : 302,109.30 = 118,317.75 : x - Step 2: Convert to fraction form
218,919.75/302,109.30 = 118,317.75/x - Step 3: Cross multiply
218,919.75x = 302,109.30 × 118,317.75 - Step 4: Simplify right side
218,919.75x = 35,744,892,630.08 - Step 5: Solve for x
x = 35,744,892,630.08/218,919.75 - Step 6: Final answer
x = 163,278.52
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1.5x scale
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.