Finding the Fourth Proportional to 393,071.26, 542,440.14 and 223,314.70
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Solution
The fourth proportional to 393,071.26, 542,440.14 and 223,314.70 is: 308,175.31
Step by Step Solution
- Step 1: Write the proportion equation
393,071.26 : 542,440.14 = 223,314.70 : x - Step 2: Convert to fraction form
393,071.26/542,440.14 = 223,314.70/x - Step 3: Cross multiply
393,071.26x = 542,440.14 × 223,314.70 - Step 4: Simplify right side
393,071.26x = 121,134,857,132.06 - Step 5: Solve for x
x = 121,134,857,132.06/393,071.26 - Step 6: Final answer
x = 308,175.31
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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.