Finding the Fourth Proportional to 397,979.75, 549,206.57 and 216,691.68
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Solution
The fourth proportional to 397,979.75, 549,206.57 and 216,691.68 is: 299,031.53
Step by Step Solution
- Step 1: Write the proportion equation
397,979.75 : 549,206.57 = 216,691.68 : x - Step 2: Convert to fraction form
397,979.75/549,206.57 = 216,691.68/x - Step 3: Cross multiply
397,979.75x = 549,206.57 × 216,691.68 - Step 4: Simplify right side
397,979.75x = 119,008,492,960.81 - Step 5: Solve for x
x = 119,008,492,960.81/397,979.75 - Step 6: Final answer
x = 299,031.53
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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.