Finding the Fourth Proportional to 262,403.70, 393,605.55 and 209,915.70
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Solution
The fourth proportional to 262,403.70, 393,605.55 and 209,915.70 is: 314,873.55
Step by Step Solution
- Step 1: Write the proportion equation
262,403.70 : 393,605.55 = 209,915.70 : x - Step 2: Convert to fraction form
262,403.70/393,605.55 = 209,915.70/x - Step 3: Cross multiply
262,403.70x = 393,605.55 × 209,915.70 - Step 4: Simplify right side
262,403.70x = 82,623,984,552.14 - Step 5: Solve for x
x = 82,623,984,552.14/262,403.70 - Step 6: Final answer
x = 314,873.55
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1.5x scale
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.