Finding the Fourth Proportional to 217,919.15, 326,909.91 and 105,507.08
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Solution
The fourth proportional to 217,919.15, 326,909.91 and 105,507.08 is: 158,275.72
Step by Step Solution
- Step 1: Write the proportion equation
217,919.15 : 326,909.91 = 105,507.08 : x - Step 2: Convert to fraction form
217,919.15/326,909.91 = 105,507.08/x - Step 3: Cross multiply
217,919.15x = 326,909.91 × 105,507.08 - Step 4: Simplify right side
217,919.15x = 34,491,310,027.16 - Step 5: Solve for x
x = 34,491,310,027.16/217,919.15 - Step 6: Final answer
x = 158,275.72
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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.