Finding the Fourth Proportional to 205,165.68, 306,938.76 and 155,389.20
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Solution
The fourth proportional to 205,165.68, 306,938.76 and 155,389.20 is: 232,470.50
Step by Step Solution
- Step 1: Write the proportion equation
205,165.68 : 306,938.76 = 155,389.20 : x - Step 2: Convert to fraction form
205,165.68/306,938.76 = 155,389.20/x - Step 3: Cross multiply
205,165.68x = 306,938.76 × 155,389.20 - Step 4: Simplify right side
205,165.68x = 47,694,968,365.39 - Step 5: Solve for x
x = 47,694,968,365.39/205,165.68 - Step 6: Final answer
x = 232,470.50
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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.