Finding the Fourth Proportional to 211,521.05, 291,734.08 and 130,993.28
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Solution
The fourth proportional to 211,521.05, 291,734.08 and 130,993.28 is: 180,668.56
Step by Step Solution
- Step 1: Write the proportion equation
211,521.05 : 291,734.08 = 130,993.28 : x - Step 2: Convert to fraction form
211,521.05/291,734.08 = 130,993.28/x - Step 3: Cross multiply
211,521.05x = 291,734.08 × 130,993.28 - Step 4: Simplify right side
211,521.05x = 38,215,204,026.98 - Step 5: Solve for x
x = 38,215,204,026.98/211,521.05 - Step 6: Final answer
x = 180,668.56
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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.