Finding the Fourth Proportional to 207,970.13, 286,998.80 and 112,476.80
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Solution
The fourth proportional to 207,970.13, 286,998.80 and 112,476.80 is: 155,217.99
Step by Step Solution
- Step 1: Write the proportion equation
207,970.13 : 286,998.80 = 112,476.80 : x - Step 2: Convert to fraction form
207,970.13/286,998.80 = 112,476.80/x - Step 3: Cross multiply
207,970.13x = 286,998.80 × 112,476.80 - Step 4: Simplify right side
207,970.13x = 32,280,706,782.95 - Step 5: Solve for x
x = 32,280,706,782.95/207,970.13 - Step 6: Final answer
x = 155,217.99
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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.