Finding the Fourth Proportional to 306,415.65, 459,679.95 and 137,940.09
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Solution
The fourth proportional to 306,415.65, 459,679.95 and 137,940.09 is: 206,935.56
Step by Step Solution
- Step 1: Write the proportion equation
306,415.65 : 459,679.95 = 137,940.09 : x - Step 2: Convert to fraction form
306,415.65/459,679.95 = 137,940.09/x - Step 3: Cross multiply
306,415.65x = 459,679.95 × 137,940.09 - Step 4: Simplify right side
306,415.65x = 63,408,293,674.20 - Step 5: Solve for x
x = 63,408,293,674.20/306,415.65 - Step 6: Final answer
x = 206,935.56
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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.