Finding the Fourth Proportional to 278,597.66, 417,956.49 and 86,468.09
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Solution
The fourth proportional to 278,597.66, 417,956.49 and 86,468.09 is: 129,720.75
Step by Step Solution
- Step 1: Write the proportion equation
278,597.66 : 417,956.49 = 86,468.09 : x - Step 2: Convert to fraction form
278,597.66/417,956.49 = 86,468.09/x - Step 3: Cross multiply
278,597.66x = 417,956.49 × 86,468.09 - Step 4: Simplify right side
278,597.66x = 36,139,897,303.62 - Step 5: Solve for x
x = 36,139,897,303.62/278,597.66 - Step 6: Final answer
x = 129,720.75
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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.