Finding the Fourth Proportional to 319,973.12, 479,959.68 and 122,842.88
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Solution
The fourth proportional to 319,973.12, 479,959.68 and 122,842.88 is: 184,264.32
Step by Step Solution
- Step 1: Write the proportion equation
319,973.12 : 479,959.68 = 122,842.88 : x - Step 2: Convert to fraction form
319,973.12/479,959.68 = 122,842.88/x - Step 3: Cross multiply
319,973.12x = 479,959.68 × 122,842.88 - Step 4: Simplify right side
319,973.12x = 58,959,629,375.08 - Step 5: Solve for x
x = 58,959,629,375.08/319,973.12 - Step 6: Final answer
x = 184,264.32
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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.