Finding the Fourth Proportional to 204,053.15, 306,079.73 and 128,929.70
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Solution
The fourth proportional to 204,053.15, 306,079.73 and 128,929.70 is: 193,394.55
Step by Step Solution
- Step 1: Write the proportion equation
204,053.15 : 306,079.73 = 128,929.70 : x - Step 2: Convert to fraction form
204,053.15/306,079.73 = 128,929.70/x - Step 3: Cross multiply
204,053.15x = 306,079.73 × 128,929.70 - Step 4: Simplify right side
204,053.15x = 39,462,767,764.98 - Step 5: Solve for x
x = 39,462,767,764.98/204,053.15 - Step 6: Final answer
x = 193,394.55
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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.