Finding the Fourth Proportional to 388,640.13, 536,309.17 and 216,549.19
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Solution
The fourth proportional to 388,640.13, 536,309.17 and 216,549.19 is: 298,829.96
Step by Step Solution
- Step 1: Write the proportion equation
388,640.13 : 536,309.17 = 216,549.19 : x - Step 2: Convert to fraction form
388,640.13/536,309.17 = 216,549.19/x - Step 3: Cross multiply
388,640.13x = 536,309.17 × 216,549.19 - Step 4: Simplify right side
388,640.13x = 116,137,316,353.07 - Step 5: Solve for x
x = 116,137,316,353.07/388,640.13 - Step 6: Final answer
x = 298,829.96
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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.