Finding the Fourth Proportional to 290,052.12, 435,089.99 and 138,171.13
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Solution
The fourth proportional to 290,052.12, 435,089.99 and 138,171.13 is: 207,262.32
Step by Step Solution
- Step 1: Write the proportion equation
290,052.12 : 435,089.99 = 138,171.13 : x - Step 2: Convert to fraction form
290,052.12/435,089.99 = 138,171.13/x - Step 3: Cross multiply
290,052.12x = 435,089.99 × 138,171.13 - Step 4: Simplify right side
290,052.12x = 60,116,875,569.99 - Step 5: Solve for x
x = 60,116,875,569.99/290,052.12 - Step 6: Final answer
x = 207,262.32
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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.