Finding the Fourth Proportional to 386,621.12, 533,291.64 and 279,348.68
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Solution
The fourth proportional to 386,621.12, 533,291.64 and 279,348.68 is: 385,323.79
Step by Step Solution
- Step 1: Write the proportion equation
386,621.12 : 533,291.64 = 279,348.68 : x - Step 2: Convert to fraction form
386,621.12/533,291.64 = 279,348.68/x - Step 3: Cross multiply
386,621.12x = 533,291.64 × 279,348.68 - Step 4: Simplify right side
386,621.12x = 148,974,315,689.04 - Step 5: Solve for x
x = 148,974,315,689.04/386,621.12 - Step 6: Final answer
x = 385,323.79
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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.