Finding the Fourth Proportional to 399,669.28, 551,543.74 and 215,907.93
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Solution
The fourth proportional to 399,669.28, 551,543.74 and 215,907.93 is: 297,953.02
Step by Step Solution
- Step 1: Write the proportion equation
399,669.28 : 551,543.74 = 215,907.93 : x - Step 2: Convert to fraction form
399,669.28/551,543.74 = 215,907.93/x - Step 3: Cross multiply
399,669.28x = 551,543.74 × 215,907.93 - Step 4: Simplify right side
399,669.28x = 119,082,668,186.19 - Step 5: Solve for x
x = 119,082,668,186.19/399,669.28 - Step 6: Final answer
x = 297,953.02
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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.