Finding the Fourth Proportional to 279,169.60, 418,624.80 and 121,316.80
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Solution
The fourth proportional to 279,169.60, 418,624.80 and 121,316.80 is: 181,918.88
Step by Step Solution
- Step 1: Write the proportion equation
279,169.60 : 418,624.80 = 121,316.80 : x - Step 2: Convert to fraction form
279,169.60/418,624.80 = 121,316.80/x - Step 3: Cross multiply
279,169.60x = 418,624.80 × 121,316.80 - Step 4: Simplify right side
279,169.60x = 50,786,221,136.64 - Step 5: Solve for x
x = 50,786,221,136.64/279,169.60 - Step 6: Final answer
x = 181,918.88
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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.