Finding the Fourth Proportional to 310,268.20, 428,220.94 and 258,503.26
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Solution
The fourth proportional to 310,268.20, 428,220.94 and 258,503.26 is: 356,776.84
Step by Step Solution
- Step 1: Write the proportion equation
310,268.20 : 428,220.94 = 258,503.26 : x - Step 2: Convert to fraction form
310,268.20/428,220.94 = 258,503.26/x - Step 3: Cross multiply
310,268.20x = 428,220.94 × 258,503.26 - Step 4: Simplify right side
310,268.20x = 110,696,508,990.26 - Step 5: Solve for x
x = 110,696,508,990.26/310,268.20 - Step 6: Final answer
x = 356,776.84
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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.