Finding the Fourth Proportional to 356,509.09, 534,757.94 and 86,639.41
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Solution
The fourth proportional to 356,509.09, 534,757.94 and 86,639.41 is: 129,957.73
Step by Step Solution
- Step 1: Write the proportion equation
356,509.09 : 534,757.94 = 86,639.41 : x - Step 2: Convert to fraction form
356,509.09/534,757.94 = 86,639.41/x - Step 3: Cross multiply
356,509.09x = 534,757.94 × 86,639.41 - Step 4: Simplify right side
356,509.09x = 46,331,111,981.22 - Step 5: Solve for x
x = 46,331,111,981.22/356,509.09 - Step 6: Final answer
x = 129,957.73
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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.