Finding the Fourth Proportional to 354,623.40, 531,935.10 and 221,653.80
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Solution
The fourth proportional to 354,623.40, 531,935.10 and 221,653.80 is: 332,480.70
Step by Step Solution
- Step 1: Write the proportion equation
354,623.40 : 531,935.10 = 221,653.80 : x - Step 2: Convert to fraction form
354,623.40/531,935.10 = 221,653.80/x - Step 3: Cross multiply
354,623.40x = 531,935.10 × 221,653.80 - Step 4: Simplify right side
354,623.40x = 117,905,436,268.38 - Step 5: Solve for x
x = 117,905,436,268.38/354,623.40 - Step 6: Final answer
x = 332,480.70
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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.