Finding the Fourth Proportional to 211,790.18, 317,591.98 and 99,502.32
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Solution
The fourth proportional to 211,790.18, 317,591.98 and 99,502.32 is: 149,209.65
Step by Step Solution
- Step 1: Write the proportion equation
211,790.18 : 317,591.98 = 99,502.32 : x - Step 2: Convert to fraction form
211,790.18/317,591.98 = 99,502.32/x - Step 3: Cross multiply
211,790.18x = 317,591.98 × 99,502.32 - Step 4: Simplify right side
211,790.18x = 31,601,138,823.39 - Step 5: Solve for x
x = 31,601,138,823.39/211,790.18 - Step 6: Final answer
x = 149,209.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.