Finding the Fourth Proportional to 257,556.44, 355,439.36 and 142,827.40
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Solution
The fourth proportional to 257,556.44, 355,439.36 and 142,827.40 is: 197,108.17
Step by Step Solution
- Step 1: Write the proportion equation
257,556.44 : 355,439.36 = 142,827.40 : x - Step 2: Convert to fraction form
257,556.44/355,439.36 = 142,827.40/x - Step 3: Cross multiply
257,556.44x = 355,439.36 × 142,827.40 - Step 4: Simplify right side
257,556.44x = 50,766,479,646.46 - Step 5: Solve for x
x = 50,766,479,646.46/257,556.44 - Step 6: Final answer
x = 197,108.17
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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.