Finding the Fourth Proportional to 211,423.79, 291,764.61 and 115,932.08
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Solution
The fourth proportional to 211,423.79, 291,764.61 and 115,932.08 is: 159,986.15
Step by Step Solution
- Step 1: Write the proportion equation
211,423.79 : 291,764.61 = 115,932.08 : x - Step 2: Convert to fraction form
211,423.79/291,764.61 = 115,932.08/x - Step 3: Cross multiply
211,423.79x = 291,764.61 × 115,932.08 - Step 4: Simplify right side
211,423.79x = 33,824,876,648.87 - Step 5: Solve for x
x = 33,824,876,648.87/211,423.79 - Step 6: Final answer
x = 159,986.15
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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.