Finding the Fourth Proportional to 428,864.80, 643,102.80 and 162,536.80
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Solution
The fourth proportional to 428,864.80, 643,102.80 and 162,536.80 is: 243,731.52
Step by Step Solution
- Step 1: Write the proportion equation
428,864.80 : 643,102.80 = 162,536.80 : x - Step 2: Convert to fraction form
428,864.80/643,102.80 = 162,536.80/x - Step 3: Cross multiply
428,864.80x = 643,102.80 × 162,536.80 - Step 4: Simplify right side
428,864.80x = 104,527,871,183.04 - Step 5: Solve for x
x = 104,527,871,183.04/428,864.80 - Step 6: Final answer
x = 243,731.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.