Finding the Fourth Proportional to 269,927.12, 405,139.76 and 136,900.80
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Solution
The fourth proportional to 269,927.12, 405,139.76 and 136,900.80 is: 205,477.53
Step by Step Solution
- Step 1: Write the proportion equation
269,927.12 : 405,139.76 = 136,900.80 : x - Step 2: Convert to fraction form
269,927.12/405,139.76 = 136,900.80/x - Step 3: Cross multiply
269,927.12x = 405,139.76 × 136,900.80 - Step 4: Simplify right side
269,927.12x = 55,463,957,598.06 - Step 5: Solve for x
x = 55,463,957,598.06/269,927.12 - Step 6: Final answer
x = 205,477.53
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1.5x scale
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.