Finding the Fourth Proportional to 257,629.74, 355,549.68 and 142,919.70
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Solution
The fourth proportional to 257,629.74, 355,549.68 and 142,919.70 is: 197,240.64
Step by Step Solution
- Step 1: Write the proportion equation
257,629.74 : 355,549.68 = 142,919.70 : x - Step 2: Convert to fraction form
257,629.74/355,549.68 = 142,919.70/x - Step 3: Cross multiply
257,629.74x = 355,549.68 × 142,919.70 - Step 4: Simplify right side
257,629.74x = 50,815,053,600.70 - Step 5: Solve for x
x = 50,815,053,600.70/257,629.74 - Step 6: Final answer
x = 197,240.64
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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.