Finding the Fourth Proportional to 239,969.24, 331,221.60 and 138,005.84
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Solution
The fourth proportional to 239,969.24, 331,221.60 and 138,005.84 is: 190,484.89
Step by Step Solution
- Step 1: Write the proportion equation
239,969.24 : 331,221.60 = 138,005.84 : x - Step 2: Convert to fraction form
239,969.24/331,221.60 = 138,005.84/x - Step 3: Cross multiply
239,969.24x = 331,221.60 × 138,005.84 - Step 4: Simplify right side
239,969.24x = 45,710,515,134.14 - Step 5: Solve for x
x = 45,710,515,134.14/239,969.24 - Step 6: Final answer
x = 190,484.89
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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.