Finding the Fourth Proportional to 354,946.32, 489,868.88 and 202,021.70
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Solution
The fourth proportional to 354,946.32, 489,868.88 and 202,021.70 is: 278,814.39
Step by Step Solution
- Step 1: Write the proportion equation
354,946.32 : 489,868.88 = 202,021.70 : x - Step 2: Convert to fraction form
354,946.32/489,868.88 = 202,021.70/x - Step 3: Cross multiply
354,946.32x = 489,868.88 × 202,021.70 - Step 4: Simplify right side
354,946.32x = 98,964,140,455.24 - Step 5: Solve for x
x = 98,964,140,455.24/354,946.32 - Step 6: Final answer
x = 278,814.39
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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.