Finding the Fourth Proportional to 387,283.20, 580,749.84 and 137,971.68
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Solution
The fourth proportional to 387,283.20, 580,749.84 and 137,971.68 is: 206,895.19
Step by Step Solution
- Step 1: Write the proportion equation
387,283.20 : 580,749.84 = 137,971.68 : x - Step 2: Convert to fraction form
387,283.20/580,749.84 = 137,971.68/x - Step 3: Cross multiply
387,283.20x = 580,749.84 × 137,971.68 - Step 4: Simplify right side
387,283.20x = 80,127,031,084.53 - Step 5: Solve for x
x = 80,127,031,084.53/387,283.20 - Step 6: Final answer
x = 206,895.19
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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.