Finding the Fourth Proportional to 209,599.99, 289,243.40 and 122,400.07
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Solution
The fourth proportional to 209,599.99, 289,243.40 and 122,400.07 is: 168,909.41
Step by Step Solution
- Step 1: Write the proportion equation
209,599.99 : 289,243.40 = 122,400.07 : x - Step 2: Convert to fraction form
209,599.99/289,243.40 = 122,400.07/x - Step 3: Cross multiply
209,599.99x = 289,243.40 × 122,400.07 - Step 4: Simplify right side
209,599.99x = 35,403,411,071.93 - Step 5: Solve for x
x = 35,403,411,071.93/209,599.99 - Step 6: Final answer
x = 168,909.41
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1.5x scale
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.