Finding the Fourth Proportional to 438,403.15, 657,623.29 and 138,877.09
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Solution
The fourth proportional to 438,403.15, 657,623.29 and 138,877.09 is: 208,321.52
Step by Step Solution
- Step 1: Write the proportion equation
438,403.15 : 657,623.29 = 138,877.09 : x - Step 2: Convert to fraction form
438,403.15/657,623.29 = 138,877.09/x - Step 3: Cross multiply
438,403.15x = 657,623.29 × 138,877.09 - Step 4: Simplify right side
438,403.15x = 91,328,808,831.43 - Step 5: Solve for x
x = 91,328,808,831.43/438,403.15 - Step 6: Final answer
x = 208,321.52
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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.