Finding the Fourth Proportional to 397,982.75, 549,210.71 and 216,694.68
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Solution
The fourth proportional to 397,982.75, 549,210.71 and 216,694.68 is: 299,035.67
Step by Step Solution
- Step 1: Write the proportion equation
397,982.75 : 549,210.71 = 216,694.68 : x - Step 2: Convert to fraction form
397,982.75/549,210.71 = 216,694.68/x - Step 3: Cross multiply
397,982.75x = 549,210.71 × 216,694.68 - Step 4: Simplify right side
397,982.75x = 119,011,039,056.02 - Step 5: Solve for x
x = 119,011,039,056.02/397,982.75 - Step 6: Final answer
x = 299,035.67
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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.