Finding the Fourth Proportional to 388,069.09, 535,534.49 and 218,303.21
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Solution
The fourth proportional to 388,069.09, 535,534.49 and 218,303.21 is: 301,257.95
Step by Step Solution
- Step 1: Write the proportion equation
388,069.09 : 535,534.49 = 218,303.21 : x - Step 2: Convert to fraction form
388,069.09/535,534.49 = 218,303.21/x - Step 3: Cross multiply
388,069.09x = 535,534.49 × 218,303.21 - Step 4: Simplify right side
388,069.09x = 116,908,898,232.71 - Step 5: Solve for x
x = 116,908,898,232.71/388,069.09 - Step 6: Final answer
x = 301,257.95
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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.