Finding the Fourth Proportional to 211,511.12, 291,880.20 and 136,059.44
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Solution
The fourth proportional to 211,511.12, 291,880.20 and 136,059.44 is: 187,758.72
Step by Step Solution
- Step 1: Write the proportion equation
211,511.12 : 291,880.20 = 136,059.44 : x - Step 2: Convert to fraction form
211,511.12/291,880.20 = 136,059.44/x - Step 3: Cross multiply
211,511.12x = 291,880.20 × 136,059.44 - Step 4: Simplify right side
211,511.12x = 39,713,056,559.09 - Step 5: Solve for x
x = 39,713,056,559.09/211,511.12 - Step 6: Final answer
x = 187,758.72
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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.