Finding the Fourth Proportional to 239,236.13, 358,909.79 and 81,465.95
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Solution
The fourth proportional to 239,236.13, 358,909.79 and 81,465.95 is: 122,217.86
Step by Step Solution
- Step 1: Write the proportion equation
239,236.13 : 358,909.79 = 81,465.95 : x - Step 2: Convert to fraction form
239,236.13/358,909.79 = 81,465.95/x - Step 3: Cross multiply
239,236.13x = 358,909.79 × 81,465.95 - Step 4: Simplify right side
239,236.13x = 29,238,927,496.60 - Step 5: Solve for x
x = 29,238,927,496.60/239,236.13 - Step 6: Final answer
x = 122,217.86
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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.