Finding the Fourth Proportional to 399,513.92, 551,323.68 and 218,223.68
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Solution
The fourth proportional to 399,513.92, 551,323.68 and 218,223.68 is: 301,145.66
Step by Step Solution
- Step 1: Write the proportion equation
399,513.92 : 551,323.68 = 218,223.68 : x - Step 2: Convert to fraction form
399,513.92/551,323.68 = 218,223.68/x - Step 3: Cross multiply
399,513.92x = 551,323.68 × 218,223.68 - Step 4: Simplify right side
399,513.92x = 120,311,882,320.74 - Step 5: Solve for x
x = 120,311,882,320.74/399,513.92 - Step 6: Final answer
x = 301,145.66
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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.