Finding the Fourth Proportional to 216,681.18, 299,048.22 and 121,207.68
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Solution
The fourth proportional to 216,681.18, 299,048.22 and 121,207.68 is: 167,282.37
Step by Step Solution
- Step 1: Write the proportion equation
216,681.18 : 299,048.22 = 121,207.68 : x - Step 2: Convert to fraction form
216,681.18/299,048.22 = 121,207.68/x - Step 3: Cross multiply
216,681.18x = 299,048.22 × 121,207.68 - Step 4: Simplify right side
216,681.18x = 36,246,940,954.33 - Step 5: Solve for x
x = 36,246,940,954.33/216,681.18 - Step 6: Final answer
x = 167,282.37
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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.