Finding the Fourth Proportional to 211,478.95, 291,814.06 and 120,840.79
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Solution
The fourth proportional to 211,478.95, 291,814.06 and 120,840.79 is: 166,744.92
Step by Step Solution
- Step 1: Write the proportion equation
211,478.95 : 291,814.06 = 120,840.79 : x - Step 2: Convert to fraction form
211,478.95/291,814.06 = 120,840.79/x - Step 3: Cross multiply
211,478.95x = 291,814.06 × 120,840.79 - Step 4: Simplify right side
211,478.95x = 35,263,040,939.30 - Step 5: Solve for x
x = 35,263,040,939.30/211,478.95 - Step 6: Final answer
x = 166,744.92
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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.