Finding the Fourth Proportional to 279,806.19, 386,121.29 and 152,479.05
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Solution
The fourth proportional to 279,806.19, 386,121.29 and 152,479.05 is: 210,414.96
Step by Step Solution
- Step 1: Write the proportion equation
279,806.19 : 386,121.29 = 152,479.05 : x - Step 2: Convert to fraction form
279,806.19/386,121.29 = 152,479.05/x - Step 3: Cross multiply
279,806.19x = 386,121.29 × 152,479.05 - Step 4: Simplify right side
279,806.19x = 58,875,407,483.97 - Step 5: Solve for x
x = 58,875,407,483.97/279,806.19 - Step 6: Final answer
x = 210,414.96
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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.