Finding the Fourth Proportional to 260,072.40, 390,108.60 and 135,397.20
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Solution
The fourth proportional to 260,072.40, 390,108.60 and 135,397.20 is: 203,095.80
Step by Step Solution
- Step 1: Write the proportion equation
260,072.40 : 390,108.60 = 135,397.20 : x - Step 2: Convert to fraction form
260,072.40/390,108.60 = 135,397.20/x - Step 3: Cross multiply
260,072.40x = 390,108.60 × 135,397.20 - Step 4: Simplify right side
260,072.40x = 52,819,612,135.92 - Step 5: Solve for x
x = 52,819,612,135.92/260,072.40 - Step 6: Final answer
x = 203,095.80
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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.