Finding the Fourth Proportional to 257,542.20, 386,313.30 and 115,387.20
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Solution
The fourth proportional to 257,542.20, 386,313.30 and 115,387.20 is: 173,080.80
Step by Step Solution
- Step 1: Write the proportion equation
257,542.20 : 386,313.30 = 115,387.20 : x - Step 2: Convert to fraction form
257,542.20/386,313.30 = 115,387.20/x - Step 3: Cross multiply
257,542.20x = 386,313.30 × 115,387.20 - Step 4: Simplify right side
257,542.20x = 44,575,610,009.76 - Step 5: Solve for x
x = 44,575,610,009.76/257,542.20 - Step 6: Final answer
x = 173,080.80
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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.