Finding the Fourth Proportional to 280,521.65, 387,122.96 and 153,200.99
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Solution
The fourth proportional to 280,521.65, 387,122.96 and 153,200.99 is: 211,419.05
Step by Step Solution
- Step 1: Write the proportion equation
280,521.65 : 387,122.96 = 153,200.99 : x - Step 2: Convert to fraction form
280,521.65/387,122.96 = 153,200.99/x - Step 3: Cross multiply
280,521.65x = 387,122.96 × 153,200.99 - Step 4: Simplify right side
280,521.65x = 59,307,619,957.73 - Step 5: Solve for x
x = 59,307,619,957.73/280,521.65 - Step 6: Final answer
x = 211,419.05
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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.