Finding the Fourth Proportional to 319,959.52, 479,640.12 and 142,370.08
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Solution
The fourth proportional to 319,959.52, 479,640.12 and 142,370.08 is: 213,422.00
Step by Step Solution
- Step 1: Write the proportion equation
319,959.52 : 479,640.12 = 142,370.08 : x - Step 2: Convert to fraction form
319,959.52/479,640.12 = 142,370.08/x - Step 3: Cross multiply
319,959.52x = 479,640.12 × 142,370.08 - Step 4: Simplify right side
319,959.52x = 68,286,402,255.61 - Step 5: Solve for x
x = 68,286,402,255.61/319,959.52 - Step 6: Final answer
x = 213,422.00
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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.