Finding the Fourth Proportional to 235,154,979.78, 324,515,133.84 and 129,315,220.02
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Solution
The fourth proportional to 235,154,979.78, 324,515,133.84 and 129,315,220.02 is: 178,455,697.48
Step by Step Solution
- Step 1: Write the proportion equation
235,154,979.78 : 324,515,133.84 = 129,315,220.02 : x - Step 2: Convert to fraction form
235,154,979.78/324,515,133.84 = 129,315,220.02/x - Step 3: Cross multiply
235,154,979.78x = 324,515,133.84 × 129,315,220.02 - Step 4: Simplify right side
235,154,979.78x = 41,964,745,932,339,344 - Step 5: Solve for x
x = 41,964,745,932,339,344/235,154,979.78 - Step 6: Final answer
x = 178,455,697.48
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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.