Finding the Fourth Proportional to 279,123.26, 385,178.35 and 158,272.67
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Solution
The fourth proportional to 279,123.26, 385,178.35 and 158,272.67 is: 218,409.63
Step by Step Solution
- Step 1: Write the proportion equation
279,123.26 : 385,178.35 = 158,272.67 : x - Step 2: Convert to fraction form
279,123.26/385,178.35 = 158,272.67/x - Step 3: Cross multiply
279,123.26x = 385,178.35 × 158,272.67 - Step 4: Simplify right side
279,123.26x = 60,963,205,880.69 - Step 5: Solve for x
x = 60,963,205,880.69/279,123.26 - Step 6: Final answer
x = 218,409.63
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1.5x scale
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.