Finding the Fourth Proportional to 420,615.79, 580,427.96 and 239,324.02
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Solution
The fourth proportional to 420,615.79, 580,427.96 and 239,324.02 is: 330,254.73
Step by Step Solution
- Step 1: Write the proportion equation
420,615.79 : 580,427.96 = 239,324.02 : x - Step 2: Convert to fraction form
420,615.79/580,427.96 = 239,324.02/x - Step 3: Cross multiply
420,615.79x = 580,427.96 × 239,324.02 - Step 4: Simplify right side
420,615.79x = 138,910,352,707.60 - Step 5: Solve for x
x = 138,910,352,707.60/420,615.79 - Step 6: Final answer
x = 330,254.73
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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.