Finding the Fourth Proportional to 212,804.24, 318,643.20 and 128,451.65
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Solution
The fourth proportional to 212,804.24, 318,643.20 and 128,451.65 is: 192,337.54
Step by Step Solution
- Step 1: Write the proportion equation
212,804.24 : 318,643.20 = 128,451.65 : x - Step 2: Convert to fraction form
212,804.24/318,643.20 = 128,451.65/x - Step 3: Cross multiply
212,804.24x = 318,643.20 × 128,451.65 - Step 4: Simplify right side
212,804.24x = 40,930,242,565.81 - Step 5: Solve for x
x = 40,930,242,565.81/212,804.24 - Step 6: Final answer
x = 192,337.54
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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.