Finding the Fourth Proportional to 279,991.40, 386,388.51 and 152,666.99
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Solution
The fourth proportional to 279,991.40, 386,388.51 and 152,666.99 is: 210,680.65
Step by Step Solution
- Step 1: Write the proportion equation
279,991.40 : 386,388.51 = 152,666.99 : x - Step 2: Convert to fraction form
279,991.40/386,388.51 = 152,666.99/x - Step 3: Cross multiply
279,991.40x = 386,388.51 × 152,666.99 - Step 4: Simplify right side
279,991.40x = 58,988,770,792.28 - Step 5: Solve for x
x = 58,988,770,792.28/279,991.40 - Step 6: Final answer
x = 210,680.65
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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.