Finding the Fourth Proportional to 279,129.60, 418,564.80 and 121,276.80
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Solution
The fourth proportional to 279,129.60, 418,564.80 and 121,276.80 is: 181,858.89
Step by Step Solution
- Step 1: Write the proportion equation
279,129.60 : 418,564.80 = 121,276.80 : x - Step 2: Convert to fraction form
279,129.60/418,564.80 = 121,276.80/x - Step 3: Cross multiply
279,129.60x = 418,564.80 × 121,276.80 - Step 4: Simplify right side
279,129.60x = 50,762,199,536.64 - Step 5: Solve for x
x = 50,762,199,536.64/279,129.60 - Step 6: Final answer
x = 181,858.89
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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.