Finding the Fourth Proportional to 211,321.70, 291,653.84 and 130,775.19
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Solution
The fourth proportional to 211,321.70, 291,653.84 and 130,775.19 is: 180,488.26
Step by Step Solution
- Step 1: Write the proportion equation
211,321.70 : 291,653.84 = 130,775.19 : x - Step 2: Convert to fraction form
211,321.70/291,653.84 = 130,775.19/x - Step 3: Cross multiply
211,321.70x = 291,653.84 × 130,775.19 - Step 4: Simplify right side
211,321.70x = 38,141,086,340.23 - Step 5: Solve for x
x = 38,141,086,340.23/211,321.70 - Step 6: Final answer
x = 180,488.26
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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.