Finding the Fourth Proportional to 211,182.39, 291,438.96 and 115,689.06
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Solution
The fourth proportional to 211,182.39, 291,438.96 and 115,689.06 is: 159,654.88
Step by Step Solution
- Step 1: Write the proportion equation
211,182.39 : 291,438.96 = 115,689.06 : x - Step 2: Convert to fraction form
211,182.39/291,438.96 = 115,689.06/x - Step 3: Cross multiply
211,182.39x = 291,438.96 × 115,689.06 - Step 4: Simplify right side
211,182.39x = 33,716,299,329.78 - Step 5: Solve for x
x = 33,716,299,329.78/211,182.39 - Step 6: Final answer
x = 159,654.88
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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.