Finding the Fourth Proportional to 257,628.74, 355,548.30 and 142,918.70
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Solution
The fourth proportional to 257,628.74, 355,548.30 and 142,918.70 is: 197,239.26
Step by Step Solution
- Step 1: Write the proportion equation
257,628.74 : 355,548.30 = 142,918.70 : x - Step 2: Convert to fraction form
257,628.74/355,548.30 = 142,918.70/x - Step 3: Cross multiply
257,628.74x = 355,548.30 × 142,918.70 - Step 4: Simplify right side
257,628.74x = 50,814,500,823.21 - Step 5: Solve for x
x = 50,814,500,823.21/257,628.74 - Step 6: Final answer
x = 197,239.26
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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.