Finding the Fourth Proportional to 319,287.06, 478,930.59 and 129,766.50
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Solution
The fourth proportional to 319,287.06, 478,930.59 and 129,766.50 is: 194,649.75
Step by Step Solution
- Step 1: Write the proportion equation
319,287.06 : 478,930.59 = 129,766.50 : x - Step 2: Convert to fraction form
319,287.06/478,930.59 = 129,766.50/x - Step 3: Cross multiply
319,287.06x = 478,930.59 × 129,766.50 - Step 4: Simplify right side
319,287.06x = 62,149,146,407.24 - Step 5: Solve for x
x = 62,149,146,407.24/319,287.06 - Step 6: Final answer
x = 194,649.75
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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.