Finding the Fourth Proportional to 209,205.68, 314,946.80 and 190,605.20
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Solution
The fourth proportional to 209,205.68, 314,946.80 and 190,605.20 is: 286,944.88
Step by Step Solution
- Step 1: Write the proportion equation
209,205.68 : 314,946.80 = 190,605.20 : x - Step 2: Convert to fraction form
209,205.68/314,946.80 = 190,605.20/x - Step 3: Cross multiply
209,205.68x = 314,946.80 × 190,605.20 - Step 4: Simplify right side
209,205.68x = 60,030,497,803.36 - Step 5: Solve for x
x = 60,030,497,803.36/209,205.68 - Step 6: Final answer
x = 286,944.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.