Finding the Fourth Proportional to 216,971.71, 299,418.99 and 121,480.00
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Solution
The fourth proportional to 216,971.71, 299,418.99 and 121,480.00 is: 167,641.29
Step by Step Solution
- Step 1: Write the proportion equation
216,971.71 : 299,418.99 = 121,480.00 : x - Step 2: Convert to fraction form
216,971.71/299,418.99 = 121,480.00/x - Step 3: Cross multiply
216,971.71x = 299,418.99 × 121,480.00 - Step 4: Simplify right side
216,971.71x = 36,373,416,800.71 - Step 5: Solve for x
x = 36,373,416,800.71/216,971.71 - Step 6: Final answer
x = 167,641.29
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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.