Finding the Fourth Proportional to 372,122.15, 513,513.07 and 210,988.09
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Solution
The fourth proportional to 372,122.15, 513,513.07 and 210,988.09 is: 291,154.78
Step by Step Solution
- Step 1: Write the proportion equation
372,122.15 : 513,513.07 = 210,988.09 : x - Step 2: Convert to fraction form
372,122.15/513,513.07 = 210,988.09/x - Step 3: Cross multiply
372,122.15x = 513,513.07 × 210,988.09 - Step 4: Simplify right side
372,122.15x = 108,345,141,943.76 - Step 5: Solve for x
x = 108,345,141,943.76/372,122.15 - Step 6: Final answer
x = 291,154.78
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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.