Finding the Fourth Proportional to 270,172.10, 372,812.99 and 155,420.21
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Solution
The fourth proportional to 270,172.10, 372,812.99 and 155,420.21 is: 214,465.79
Step by Step Solution
- Step 1: Write the proportion equation
270,172.10 : 372,812.99 = 155,420.21 : x - Step 2: Convert to fraction form
270,172.10/372,812.99 = 155,420.21/x - Step 3: Cross multiply
270,172.10x = 372,812.99 × 155,420.21 - Step 4: Simplify right side
270,172.10x = 57,942,671,332.46 - Step 5: Solve for x
x = 57,942,671,332.46/270,172.10 - Step 6: Final answer
x = 214,465.79
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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.