Finding the Fourth Proportional to 218,804.87, 301,980.35 and 128,197.00
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Solution
The fourth proportional to 218,804.87, 301,980.35 and 128,197.00 is: 176,929.23
Step by Step Solution
- Step 1: Write the proportion equation
218,804.87 : 301,980.35 = 128,197.00 : x - Step 2: Convert to fraction form
218,804.87/301,980.35 = 128,197.00/x - Step 3: Cross multiply
218,804.87x = 301,980.35 × 128,197.00 - Step 4: Simplify right side
218,804.87x = 38,712,976,476.24 - Step 5: Solve for x
x = 38,712,976,476.24/218,804.87 - Step 6: Final answer
x = 176,929.23
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1.5x scale
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.