Finding the Fourth Proportional to 392,837.76, 542,090.56 and 231,655.84
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Solution
The fourth proportional to 392,837.76, 542,090.56 and 231,655.84 is: 319,669.99
Step by Step Solution
- Step 1: Write the proportion equation
392,837.76 : 542,090.56 = 231,655.84 : x - Step 2: Convert to fraction form
392,837.76/542,090.56 = 231,655.84/x - Step 3: Cross multiply
392,837.76x = 542,090.56 × 231,655.84 - Step 4: Simplify right side
392,837.76x = 125,578,444,032.87 - Step 5: Solve for x
x = 125,578,444,032.87/392,837.76 - Step 6: Final answer
x = 319,669.99
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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.