Finding the Fourth Proportional to 253,663.84, 380,731.92 and 129,098.08
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Solution
The fourth proportional to 253,663.84, 380,731.92 and 129,098.08 is: 193,767.31
Step by Step Solution
- Step 1: Write the proportion equation
253,663.84 : 380,731.92 = 129,098.08 : x - Step 2: Convert to fraction form
253,663.84/380,731.92 = 129,098.08/x - Step 3: Cross multiply
253,663.84x = 380,731.92 × 129,098.08 - Step 4: Simplify right side
253,663.84x = 49,151,759,866.71 - Step 5: Solve for x
x = 49,151,759,866.71/253,663.84 - Step 6: Final answer
x = 193,767.31
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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.