Finding the Fourth Proportional to 287,941.80, 431,718.30 and 153,028.20
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Solution
The fourth proportional to 287,941.80, 431,718.30 and 153,028.20 is: 229,438.99
Step by Step Solution
- Step 1: Write the proportion equation
287,941.80 : 431,718.30 = 153,028.20 : x - Step 2: Convert to fraction form
287,941.80/431,718.30 = 153,028.20/x - Step 3: Cross multiply
287,941.80x = 431,718.30 × 153,028.20 - Step 4: Simplify right side
287,941.80x = 66,065,074,356.06 - Step 5: Solve for x
x = 66,065,074,356.06/287,941.80 - Step 6: Final answer
x = 229,438.99
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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.