Finding the Fourth Proportional to 211,031.70, 291,231.08 and 115,539.05
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Solution
The fourth proportional to 211,031.70, 291,231.08 and 115,539.05 is: 159,447.89
Step by Step Solution
- Step 1: Write the proportion equation
211,031.70 : 291,231.08 = 115,539.05 : x - Step 2: Convert to fraction form
211,031.70/291,231.08 = 115,539.05/x - Step 3: Cross multiply
211,031.70x = 291,231.08 × 115,539.05 - Step 4: Simplify right side
211,031.70x = 33,648,560,279.82 - Step 5: Solve for x
x = 33,648,560,279.82/211,031.70 - Step 6: Final answer
x = 159,447.89
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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.