Finding the Fourth Proportional to 259,424.64, 389,134.56 and 72,435.84
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Solution
The fourth proportional to 259,424.64, 389,134.56 and 72,435.84 is: 108,653.09
Step by Step Solution
- Step 1: Write the proportion equation
259,424.64 : 389,134.56 = 72,435.84 : x - Step 2: Convert to fraction form
259,424.64/389,134.56 = 72,435.84/x - Step 3: Cross multiply
259,424.64x = 389,134.56 × 72,435.84 - Step 4: Simplify right side
259,424.64x = 28,187,288,726.63 - Step 5: Solve for x
x = 28,187,288,726.63/259,424.64 - Step 6: Final answer
x = 108,653.09
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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.