Finding the Fourth Proportional to 211,971.30, 292,536.69 and 121,355.70
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Solution
The fourth proportional to 211,971.30, 292,536.69 and 121,355.70 is: 167,480.20
Step by Step Solution
- Step 1: Write the proportion equation
211,971.30 : 292,536.69 = 121,355.70 : x - Step 2: Convert to fraction form
211,971.30/292,536.69 = 121,355.70/x - Step 3: Cross multiply
211,971.30x = 292,536.69 × 121,355.70 - Step 4: Simplify right side
211,971.30x = 35,500,994,790.63 - Step 5: Solve for x
x = 35,500,994,790.63/211,971.30 - Step 6: Final answer
x = 167,480.20
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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.