Finding the Fourth Proportional to 399,706.68, 551,588.58 and 218,414.74
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Solution
The fourth proportional to 399,706.68, 551,588.58 and 218,414.74 is: 301,408.71
Step by Step Solution
- Step 1: Write the proportion equation
399,706.68 : 551,588.58 = 218,414.74 : x - Step 2: Convert to fraction form
399,706.68/551,588.58 = 218,414.74/x - Step 3: Cross multiply
399,706.68x = 551,588.58 × 218,414.74 - Step 4: Simplify right side
399,706.68x = 120,475,076,287.67 - Step 5: Solve for x
x = 120,475,076,287.67/399,706.68 - Step 6: Final answer
x = 301,408.71
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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.