Finding the Fourth Proportional to 211,332.12, 291,636.60 and 115,838.60
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Solution
The fourth proportional to 211,332.12, 291,636.60 and 115,838.60 is: 159,856.32
Step by Step Solution
- Step 1: Write the proportion equation
211,332.12 : 291,636.60 = 115,838.60 : x - Step 2: Convert to fraction form
211,332.12/291,636.60 = 115,838.60/x - Step 3: Cross multiply
211,332.12x = 291,636.60 × 115,838.60 - Step 4: Simplify right side
211,332.12x = 33,782,775,452.76 - Step 5: Solve for x
x = 33,782,775,452.76/211,332.12 - Step 6: Final answer
x = 159,856.32
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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.