Finding the Fourth Proportional to 319,143.08, 478,713.18 and 82,465.64
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Solution
The fourth proportional to 319,143.08, 478,713.18 and 82,465.64 is: 123,698.09
Step by Step Solution
- Step 1: Write the proportion equation
319,143.08 : 478,713.18 = 82,465.64 : x - Step 2: Convert to fraction form
319,143.08/478,713.18 = 82,465.64/x - Step 3: Cross multiply
319,143.08x = 478,713.18 × 82,465.64 - Step 4: Simplify right side
319,143.08x = 39,477,388,765.14 - Step 5: Solve for x
x = 39,477,388,765.14/319,143.08 - Step 6: Final answer
x = 123,698.09
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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.