Finding the Fourth Proportional to 207,518.68, 310,490.43 and 128,436.76
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Solution
The fourth proportional to 207,518.68, 310,490.43 and 128,436.76 is: 192,167.69
Step by Step Solution
- Step 1: Write the proportion equation
207,518.68 : 310,490.43 = 128,436.76 : x - Step 2: Convert to fraction form
207,518.68/310,490.43 = 128,436.76/x - Step 3: Cross multiply
207,518.68x = 310,490.43 × 128,436.76 - Step 4: Simplify right side
207,518.68x = 39,878,384,840.21 - Step 5: Solve for x
x = 39,878,384,840.21/207,518.68 - Step 6: Final answer
x = 192,167.69
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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.