Finding the Fourth Proportional to 309,507.20, 426,962.73 and 202,140.08
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Solution
The fourth proportional to 309,507.20, 426,962.73 and 202,140.08 is: 278,850.64
Step by Step Solution
- Step 1: Write the proportion equation
309,507.20 : 426,962.73 = 202,140.08 : x - Step 2: Convert to fraction form
309,507.20/426,962.73 = 202,140.08/x - Step 3: Cross multiply
309,507.20x = 426,962.73 × 202,140.08 - Step 4: Simplify right side
309,507.20x = 86,306,280,399.22 - Step 5: Solve for x
x = 86,306,280,399.22/309,507.20 - Step 6: Final answer
x = 278,850.64
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1.5x scale
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.