Finding the Fourth Proportional to 388,763.79, 536,674.14 and 274,135.83
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Solution
The fourth proportional to 388,763.79, 536,674.14 and 274,135.83 is: 378,434.45
Step by Step Solution
- Step 1: Write the proportion equation
388,763.79 : 536,674.14 = 274,135.83 : x - Step 2: Convert to fraction form
388,763.79/536,674.14 = 274,135.83/x - Step 3: Cross multiply
388,763.79x = 536,674.14 × 274,135.83 - Step 4: Simplify right side
388,763.79x = 147,121,610,808.44 - Step 5: Solve for x
x = 147,121,610,808.44/388,763.79 - Step 6: Final answer
x = 378,434.45
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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.