Finding the Fourth Proportional to 421,396.73, 631,799.80 and 155,122.70
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Solution
The fourth proportional to 421,396.73, 631,799.80 and 155,122.70 is: 232,575.34
Step by Step Solution
- Step 1: Write the proportion equation
421,396.73 : 631,799.80 = 155,122.70 : x - Step 2: Convert to fraction form
421,396.73/631,799.80 = 155,122.70/x - Step 3: Cross multiply
421,396.73x = 631,799.80 × 155,122.70 - Step 4: Simplify right side
421,396.73x = 98,006,487,288.65 - Step 5: Solve for x
x = 98,006,487,288.65/421,396.73 - Step 6: Final answer
x = 232,575.34
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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.