Finding the Fourth Proportional to 211,917.38, 292,449.17 and 115,123.14
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Solution
The fourth proportional to 211,917.38, 292,449.17 and 115,123.14 is: 158,871.66
Step by Step Solution
- Step 1: Write the proportion equation
211,917.38 : 292,449.17 = 115,123.14 : x - Step 2: Convert to fraction form
211,917.38/292,449.17 = 115,123.14/x - Step 3: Cross multiply
211,917.38x = 292,449.17 × 115,123.14 - Step 4: Simplify right side
211,917.38x = 33,667,666,381.03 - Step 5: Solve for x
x = 33,667,666,381.03/211,917.38 - Step 6: Final answer
x = 158,871.66
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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.