Finding the Fourth Proportional to 257,467.80, 386,201.70 and 218,587.80
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Solution
The fourth proportional to 257,467.80, 386,201.70 and 218,587.80 is: 327,881.70
Step by Step Solution
- Step 1: Write the proportion equation
257,467.80 : 386,201.70 = 218,587.80 : x - Step 2: Convert to fraction form
257,467.80/386,201.70 = 218,587.80/x - Step 3: Cross multiply
257,467.80x = 386,201.70 × 218,587.80 - Step 4: Simplify right side
257,467.80x = 84,418,979,959.26 - Step 5: Solve for x
x = 84,418,979,959.26/257,467.80 - Step 6: Final answer
x = 327,881.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.