Finding the Fourth Proportional to 388,986.09, 536,806.58 and 216,898.98
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Solution
The fourth proportional to 388,986.09, 536,806.58 and 216,898.98 is: 299,323.81
Step by Step Solution
- Step 1: Write the proportion equation
388,986.09 : 536,806.58 = 216,898.98 : x - Step 2: Convert to fraction form
388,986.09/536,806.58 = 216,898.98/x - Step 3: Cross multiply
388,986.09x = 536,806.58 × 216,898.98 - Step 4: Simplify right side
388,986.09x = 116,432,798,574.79 - Step 5: Solve for x
x = 116,432,798,574.79/388,986.09 - Step 6: Final answer
x = 299,323.81
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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.