Finding the Fourth Proportional to 397,979.24, 549,221.20 and 216,701.09
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Solution
The fourth proportional to 397,979.24, 549,221.20 and 216,701.09 is: 299,052.87
Step by Step Solution
- Step 1: Write the proportion equation
397,979.24 : 549,221.20 = 216,701.09 : x - Step 2: Convert to fraction form
397,979.24/549,221.20 = 216,701.09/x - Step 3: Cross multiply
397,979.24x = 549,221.20 × 216,701.09 - Step 4: Simplify right side
397,979.24x = 119,016,832,691.11 - Step 5: Solve for x
x = 119,016,832,691.11/397,979.24 - Step 6: Final answer
x = 299,052.87
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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.