Finding the Fourth Proportional to 420,890.40, 580,684.68 and 239,556.96
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Solution
The fourth proportional to 420,890.40, 580,684.68 and 239,556.96 is: 330,506.60
Step by Step Solution
- Step 1: Write the proportion equation
420,890.40 : 580,684.68 = 239,556.96 : x - Step 2: Convert to fraction form
420,890.40/580,684.68 = 239,556.96/x - Step 3: Cross multiply
420,890.40x = 580,684.68 × 239,556.96 - Step 4: Simplify right side
420,890.40x = 139,107,056,659.37 - Step 5: Solve for x
x = 139,107,056,659.37/420,890.40 - Step 6: Final answer
x = 330,506.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.