Finding the Fourth Proportional to 319,023.30, 440,283.18 and 238,310.70
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Solution
The fourth proportional to 319,023.30, 440,283.18 and 238,310.70 is: 328,891.94
Step by Step Solution
- Step 1: Write the proportion equation
319,023.30 : 440,283.18 = 238,310.70 : x - Step 2: Convert to fraction form
319,023.30/440,283.18 = 238,310.70/x - Step 3: Cross multiply
319,023.30x = 440,283.18 × 238,310.70 - Step 4: Simplify right side
319,023.30x = 104,924,192,824.03 - Step 5: Solve for x
x = 104,924,192,824.03/319,023.30 - Step 6: Final answer
x = 328,891.94
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.