Finding the Fourth Proportional to 257,235.36, 354,984.80 and 142,521.44
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Solution
The fourth proportional to 257,235.36, 354,984.80 and 142,521.44 is: 196,679.59
Step by Step Solution
- Step 1: Write the proportion equation
257,235.36 : 354,984.80 = 142,521.44 : x - Step 2: Convert to fraction form
257,235.36/354,984.80 = 142,521.44/x - Step 3: Cross multiply
257,235.36x = 354,984.80 × 142,521.44 - Step 4: Simplify right side
257,235.36x = 50,592,944,874.11 - Step 5: Solve for x
x = 50,592,944,874.11/257,235.36 - Step 6: Final answer
x = 196,679.59
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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.