Finding the Fourth Proportional to 279,811.44, 386,095.68 and 157,279.68
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Solution
The fourth proportional to 279,811.44, 386,095.68 and 157,279.68 is: 217,021.17
Step by Step Solution
- Step 1: Write the proportion equation
279,811.44 : 386,095.68 = 157,279.68 : x - Step 2: Convert to fraction form
279,811.44/386,095.68 = 157,279.68/x - Step 3: Cross multiply
279,811.44x = 386,095.68 × 157,279.68 - Step 4: Simplify right side
279,811.44x = 60,725,004,999.78 - Step 5: Solve for x
x = 60,725,004,999.78/279,811.44 - Step 6: Final answer
x = 217,021.17
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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.