Finding the Fourth Proportional to 398,450.84, 549,846.12 and 217,158.87
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Solution
The fourth proportional to 398,450.84, 549,846.12 and 217,158.87 is: 299,670.50
Step by Step Solution
- Step 1: Write the proportion equation
398,450.84 : 549,846.12 = 217,158.87 : x - Step 2: Convert to fraction form
398,450.84/549,846.12 = 217,158.87/x - Step 3: Cross multiply
398,450.84x = 549,846.12 × 217,158.87 - Step 4: Simplify right side
398,450.84x = 119,403,962,093.08 - Step 5: Solve for x
x = 119,403,962,093.08/398,450.84 - Step 6: Final answer
x = 299,670.50
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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.