Finding the Fourth Proportional to 370,807.80, 511,724.84 and 209,686.95
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Solution
The fourth proportional to 370,807.80, 511,724.84 and 209,686.95 is: 289,373.69
Step by Step Solution
- Step 1: Write the proportion equation
370,807.80 : 511,724.84 = 209,686.95 : x - Step 2: Convert to fraction form
370,807.80/511,724.84 = 209,686.95/x - Step 3: Cross multiply
370,807.80x = 511,724.84 × 209,686.95 - Step 4: Simplify right side
370,807.80x = 107,302,020,938.84 - Step 5: Solve for x
x = 107,302,020,938.84/370,807.80 - Step 6: Final answer
x = 289,373.69
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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.