Finding the Fourth Proportional to 257,320.26, 355,102.80 and 142,600.80
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Solution
The fourth proportional to 257,320.26, 355,102.80 and 142,600.80 is: 196,789.57
Step by Step Solution
- Step 1: Write the proportion equation
257,320.26 : 355,102.80 = 142,600.80 : x - Step 2: Convert to fraction form
257,320.26/355,102.80 = 142,600.80/x - Step 3: Cross multiply
257,320.26x = 355,102.80 × 142,600.80 - Step 4: Simplify right side
257,320.26x = 50,637,943,362.24 - Step 5: Solve for x
x = 50,637,943,362.24/257,320.26 - Step 6: Final answer
x = 196,789.57
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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.