Finding the Fourth Proportional to 279,158.06, 418,909.30 and 129,370.44
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Solution
The fourth proportional to 279,158.06, 418,909.30 and 129,370.44 is: 194,135.47
Step by Step Solution
- Step 1: Write the proportion equation
279,158.06 : 418,909.30 = 129,370.44 : x - Step 2: Convert to fraction form
279,158.06/418,909.30 = 129,370.44/x - Step 3: Cross multiply
279,158.06x = 418,909.30 × 129,370.44 - Step 4: Simplify right side
279,158.06x = 54,194,480,461.09 - Step 5: Solve for x
x = 54,194,480,461.09/279,158.06 - Step 6: Final answer
x = 194,135.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.