Finding the Fourth Proportional to 399,845.68, 551,776.80 and 218,558.08
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Solution
The fourth proportional to 399,845.68, 551,776.80 and 218,558.08 is: 301,604.55
Step by Step Solution
- Step 1: Write the proportion equation
399,845.68 : 551,776.80 = 218,558.08 : x - Step 2: Convert to fraction form
399,845.68/551,776.80 = 218,558.08/x - Step 3: Cross multiply
399,845.68x = 551,776.80 × 218,558.08 - Step 4: Simplify right side
399,845.68x = 120,595,277,996.54 - Step 5: Solve for x
x = 120,595,277,996.54/399,845.68 - Step 6: Final answer
x = 301,604.55
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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.