Finding the Fourth Proportional to 220,990,428.30, 331,485,642.45 and 134,896,986.30
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Solution
The fourth proportional to 220,990,428.30, 331,485,642.45 and 134,896,986.30 is: 202,345,479.45
Step by Step Solution
- Step 1: Write the proportion equation
220,990,428.30 : 331,485,642.45 = 134,896,986.30 : x - Step 2: Convert to fraction form
220,990,428.30/331,485,642.45 = 134,896,986.30/x - Step 3: Cross multiply
220,990,428.30x = 331,485,642.45 × 134,896,986.30 - Step 4: Simplify right side
220,990,428.30x = 44,716,414,168,224,352 - Step 5: Solve for x
x = 44,716,414,168,224,352/220,990,428.30 - Step 6: Final answer
x = 202,345,479.45
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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.