Finding the Fourth Proportional to 260,110.43, 390,202.80 and 80,211.05
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Solution
The fourth proportional to 260,110.43, 390,202.80 and 80,211.05 is: 120,328.03
Step by Step Solution
- Step 1: Write the proportion equation
260,110.43 : 390,202.80 = 80,211.05 : x - Step 2: Convert to fraction form
260,110.43/390,202.80 = 80,211.05/x - Step 3: Cross multiply
260,110.43x = 390,202.80 × 80,211.05 - Step 4: Simplify right side
260,110.43x = 31,298,574,349.93 - Step 5: Solve for x
x = 31,298,574,349.93/260,110.43 - Step 6: Final answer
x = 120,328.03
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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.