Finding the Fourth Proportional to 494,813.14, 742,249.71 and 139,853.74
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Solution
The fourth proportional to 494,813.14, 742,249.71 and 139,853.74 is: 209,789.09
Step by Step Solution
- Step 1: Write the proportion equation
494,813.14 : 742,249.71 = 139,853.74 : x - Step 2: Convert to fraction form
494,813.14/742,249.71 = 139,853.74/x - Step 3: Cross multiply
494,813.14x = 742,249.71 × 139,853.74 - Step 4: Simplify right side
494,813.14x = 103,806,397,957.42 - Step 5: Solve for x
x = 103,806,397,957.42/494,813.14 - Step 6: Final answer
x = 209,789.09
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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.