Finding the Fourth Proportional to 299,742.11, 447,426.53 and 261,907.75
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Solution
The fourth proportional to 299,742.11, 447,426.53 and 261,907.75 is: 390,950.99
Step by Step Solution
- Step 1: Write the proportion equation
299,742.11 : 447,426.53 = 261,907.75 : x - Step 2: Convert to fraction form
299,742.11/447,426.53 = 261,907.75/x - Step 3: Cross multiply
299,742.11x = 447,426.53 × 261,907.75 - Step 4: Simplify right side
299,742.11x = 117,184,475,762.61 - Step 5: Solve for x
x = 117,184,475,762.61/299,742.11 - Step 6: Final answer
x = 390,950.99
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.