Finding the Fourth Proportional to 211,856.68, 317,631.18 and 99,479.08
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Solution
The fourth proportional to 211,856.68, 317,631.18 and 99,479.08 is: 149,146.38
Step by Step Solution
- Step 1: Write the proportion equation
211,856.68 : 317,631.18 = 99,479.08 : x - Step 2: Convert to fraction form
211,856.68/317,631.18 = 99,479.08/x - Step 3: Cross multiply
211,856.68x = 317,631.18 × 99,479.08 - Step 4: Simplify right side
211,856.68x = 31,597,657,565.71 - Step 5: Solve for x
x = 31,597,657,565.71/211,856.68 - Step 6: Final answer
x = 149,146.38
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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.