Finding the Fourth Proportional to 474,625.20, 711,937.80 and 142,201.20
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Solution
The fourth proportional to 474,625.20, 711,937.80 and 142,201.20 is: 213,301.80
Step by Step Solution
- Step 1: Write the proportion equation
474,625.20 : 711,937.80 = 142,201.20 : x - Step 2: Convert to fraction form
474,625.20/711,937.80 = 142,201.20/x - Step 3: Cross multiply
474,625.20x = 711,937.80 × 142,201.20 - Step 4: Simplify right side
474,625.20x = 101,238,409,485.36 - Step 5: Solve for x
x = 101,238,409,485.36/474,625.20 - Step 6: Final answer
x = 213,301.80
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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.