Finding the Fourth Proportional to 309,751.88, 427,392.42 and 202,479.08
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Solution
The fourth proportional to 309,751.88, 427,392.42 and 202,479.08 is: 279,378.53
Step by Step Solution
- Step 1: Write the proportion equation
309,751.88 : 427,392.42 = 202,479.08 : x - Step 2: Convert to fraction form
309,751.88/427,392.42 = 202,479.08/x - Step 3: Cross multiply
309,751.88x = 427,392.42 × 202,479.08 - Step 4: Simplify right side
309,751.88x = 86,538,024,000.57 - Step 5: Solve for x
x = 86,538,024,000.57/309,751.88 - Step 6: Final answer
x = 279,378.53
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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.