Finding the Fourth Proportional to 211,405.28, 291,737.22 and 115,911.74
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Solution
The fourth proportional to 211,405.28, 291,737.22 and 115,911.74 is: 159,957.07
Step by Step Solution
- Step 1: Write the proportion equation
211,405.28 : 291,737.22 = 115,911.74 : x - Step 2: Convert to fraction form
211,405.28/291,737.22 = 115,911.74/x - Step 3: Cross multiply
211,405.28x = 291,737.22 × 115,911.74 - Step 4: Simplify right side
211,405.28x = 33,815,768,792.96 - Step 5: Solve for x
x = 33,815,768,792.96/211,405.28 - Step 6: Final answer
x = 159,957.07
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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.