Finding the Fourth Proportional to 438,402.15, 657,621.79 and 138,876.09
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Solution
The fourth proportional to 438,402.15, 657,621.79 and 138,876.09 is: 208,320.02
Step by Step Solution
- Step 1: Write the proportion equation
438,402.15 : 657,621.79 = 138,876.09 : x - Step 2: Convert to fraction form
438,402.15/657,621.79 = 138,876.09/x - Step 3: Cross multiply
438,402.15x = 657,621.79 × 138,876.09 - Step 4: Simplify right side
438,402.15x = 91,327,945,629.41 - Step 5: Solve for x
x = 91,327,945,629.41/438,402.15 - Step 6: Final answer
x = 208,320.02
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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.