Finding the Fourth Proportional to 265,615.20, 398,422.80 and 97,135.20
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Solution
The fourth proportional to 265,615.20, 398,422.80 and 97,135.20 is: 145,702.80
Step by Step Solution
- Step 1: Write the proportion equation
265,615.20 : 398,422.80 = 97,135.20 : x - Step 2: Convert to fraction form
265,615.20/398,422.80 = 97,135.20/x - Step 3: Cross multiply
265,615.20x = 398,422.80 × 97,135.20 - Step 4: Simplify right side
265,615.20x = 38,700,878,362.56 - Step 5: Solve for x
x = 38,700,878,362.56/265,615.20 - Step 6: Final answer
x = 145,702.80
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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.