Finding the Fourth Proportional to 216,881.11, 299,295.88 and 121,387.80
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Solution
The fourth proportional to 216,881.11, 299,295.88 and 121,387.80 is: 167,515.14
Step by Step Solution
- Step 1: Write the proportion equation
216,881.11 : 299,295.88 = 121,387.80 : x - Step 2: Convert to fraction form
216,881.11/299,295.88 = 121,387.80/x - Step 3: Cross multiply
216,881.11x = 299,295.88 × 121,387.80 - Step 4: Simplify right side
216,881.11x = 36,330,868,422.26 - Step 5: Solve for x
x = 36,330,868,422.26/216,881.11 - Step 6: Final answer
x = 167,515.14
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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.