Finding the Fourth Proportional to 292,507.20, 438,760.80 and 135,043.20
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Solution
The fourth proportional to 292,507.20, 438,760.80 and 135,043.20 is: 202,564.80
Step by Step Solution
- Step 1: Write the proportion equation
292,507.20 : 438,760.80 = 135,043.20 : x - Step 2: Convert to fraction form
292,507.20/438,760.80 = 135,043.20/x - Step 3: Cross multiply
292,507.20x = 438,760.80 × 135,043.20 - Step 4: Simplify right side
292,507.20x = 59,251,662,466.56 - Step 5: Solve for x
x = 59,251,662,466.56/292,507.20 - Step 6: Final answer
x = 202,564.80
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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.