Finding the Fourth Proportional to 216,881.61, 299,296.58 and 121,388.31
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Solution
The fourth proportional to 216,881.61, 299,296.58 and 121,388.31 is: 167,515.84
Step by Step Solution
- Step 1: Write the proportion equation
216,881.61 : 299,296.58 = 121,388.31 : x - Step 2: Convert to fraction form
216,881.61/299,296.58 = 121,388.31/x - Step 3: Cross multiply
216,881.61x = 299,296.58 × 121,388.31 - Step 4: Simplify right side
216,881.61x = 36,331,105,428.04 - Step 5: Solve for x
x = 36,331,105,428.04/216,881.61 - Step 6: Final answer
x = 167,515.84
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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.