Finding the Fourth Proportional to 306,442.98, 421,924.95 and 278,067.06
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Solution
The fourth proportional to 306,442.98, 421,924.95 and 278,067.06 is: 382,855.66
Step by Step Solution
- Step 1: Write the proportion equation
306,442.98 : 421,924.95 = 278,067.06 : x - Step 2: Convert to fraction form
306,442.98/421,924.95 = 278,067.06/x - Step 3: Cross multiply
306,442.98x = 421,924.95 × 278,067.06 - Step 4: Simplify right side
306,442.98x = 117,323,430,387.15 - Step 5: Solve for x
x = 117,323,430,387.15/306,442.98 - Step 6: Final answer
x = 382,855.66
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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.