Finding the Fourth Proportional to 421,988.81, 633,038.79 and 137,579.48
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Solution
The fourth proportional to 421,988.81, 633,038.79 and 137,579.48 is: 206,387.34
Step by Step Solution
- Step 1: Write the proportion equation
421,988.81 : 633,038.79 = 137,579.48 : x - Step 2: Convert to fraction form
421,988.81/633,038.79 = 137,579.48/x - Step 3: Cross multiply
421,988.81x = 633,038.79 × 137,579.48 - Step 4: Simplify right side
421,988.81x = 87,093,147,272.65 - Step 5: Solve for x
x = 87,093,147,272.65/421,988.81 - Step 6: Final answer
x = 206,387.34
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.