Finding the Fourth Proportional to 402,823.13, 555,909.48 and 221,542.70
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Solution
The fourth proportional to 402,823.13, 555,909.48 and 221,542.70 is: 305,736.38
Step by Step Solution
- Step 1: Write the proportion equation
402,823.13 : 555,909.48 = 221,542.70 : x - Step 2: Convert to fraction form
402,823.13/555,909.48 = 221,542.70/x - Step 3: Cross multiply
402,823.13x = 555,909.48 × 221,542.70 - Step 4: Simplify right side
402,823.13x = 123,157,684,375.25 - Step 5: Solve for x
x = 123,157,684,375.25/402,823.13 - Step 6: Final answer
x = 305,736.38
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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.