Finding the Fourth Proportional to 393,069.26, 542,437.38 and 223,312.70
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Solution
The fourth proportional to 393,069.26, 542,437.38 and 223,312.70 is: 308,172.55
Step by Step Solution
- Step 1: Write the proportion equation
393,069.26 : 542,437.38 = 223,312.70 : x - Step 2: Convert to fraction form
393,069.26/542,437.38 = 223,312.70/x - Step 3: Cross multiply
393,069.26x = 542,437.38 × 223,312.70 - Step 4: Simplify right side
393,069.26x = 121,133,155,908.73 - Step 5: Solve for x
x = 121,133,155,908.73/393,069.26 - Step 6: Final answer
x = 308,172.55
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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.