Finding the Fourth Proportional to 438,156.14, 657,350.64 and 138,642.03
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Solution
The fourth proportional to 438,156.14, 657,350.64 and 138,642.03 is: 207,999.89
Step by Step Solution
- Step 1: Write the proportion equation
438,156.14 : 657,350.64 = 138,642.03 : x - Step 2: Convert to fraction form
438,156.14/657,350.64 = 138,642.03/x - Step 3: Cross multiply
438,156.14x = 657,350.64 × 138,642.03 - Step 4: Simplify right side
438,156.14x = 91,136,427,151.40 - Step 5: Solve for x
x = 91,136,427,151.40/438,156.14 - Step 6: Final answer
x = 207,999.89
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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.