Finding the Fourth Proportional to 318,613.19, 477,919.74 and 131,629.55
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Solution
The fourth proportional to 318,613.19, 477,919.74 and 131,629.55 is: 197,444.31
Step by Step Solution
- Step 1: Write the proportion equation
318,613.19 : 477,919.74 = 131,629.55 : x - Step 2: Convert to fraction form
318,613.19/477,919.74 = 131,629.55/x - Step 3: Cross multiply
318,613.19x = 477,919.74 × 131,629.55 - Step 4: Simplify right side
318,613.19x = 62,908,360,312.32 - Step 5: Solve for x
x = 62,908,360,312.32/318,613.19 - Step 6: Final answer
x = 197,444.31
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1.5x scale
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.