Finding the Fourth Proportional to 428,926.19, 591,989.09 and 238,001.09
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Solution
The fourth proportional to 428,926.19, 591,989.09 and 238,001.09 is: 328,480.87
Step by Step Solution
- Step 1: Write the proportion equation
428,926.19 : 591,989.09 = 238,001.09 : x - Step 2: Convert to fraction form
428,926.19/591,989.09 = 238,001.09/x - Step 3: Cross multiply
428,926.19x = 591,989.09 × 238,001.09 - Step 4: Simplify right side
428,926.19x = 140,894,044,538.16 - Step 5: Solve for x
x = 140,894,044,538.16/428,926.19 - Step 6: Final answer
x = 328,480.87
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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.